640402560

素因数分解:

$2^7\times 3^2\times 5^1\times 7^2\times {\mathrm{2269}}^1$

素因数の和:2308

約数の個数: 288

約数和(自身を含む): 2573567100

約数和(自身を除く): 1933164540

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 128, 140, 144, 147, 160, 168, 180, 192, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 320, 336, 360, 384, 392, 420, 441, 448, 480, 490, 504, 560, 576, 588, 630, 640, 672, 720, 735, 784, 840, 882, 896, 960, 980, 1008, 1120, 1152, 1176, 1260, 1344, 1440, 1470, 1568, 1680, 1764, 1920, 1960, 2016, 2205, 2240, 2269, 2352, 2520, 2688, 2880, 2940, 3136, 3360, 3528, 3920, 4032, 4410, 4480, 4538, 4704, 5040, 5760, 5880, 6272, 6720, 6807, 7056, 7840, 8064, 8820, 9076, 9408, 10080, 11345, 11760, 13440, 13614, 14112, 15680, 15883, 17640, 18152, 18816, 20160, 20421, 22690, 23520, 27228, 28224, 31360, 31766, 34035, 35280, 36304, 40320, 40842, 45380, 47040, 47649, 54456, 56448, 63532, 68070, 70560, 72608, 79415, 81684, 90760, 94080, 95298, 102105, 108912, 111181, 127064, 136140, 141120, 142947, 145216, 158830, 163368, 181520, 190596, 204210, 217824, 222362, 238245, 254128, 272280, 282240, 285894, 290432, 317660, 326736, 333543, 363040, 381192, 408420, 435648, 444724, 476490, 508256, 544560, 555905, 571788, 635320, 653472, 667086, 714735, 726080, 762384, 816840, 871296, 889448, 952980, 1000629, 1016512, 1089120, 1111810, 1143576, 1270640, 1306944, 1334172, 1429470, 1452160, 1524768, 1633680, 1667715, 1778896, 1905960, 2001258, 2033024, 2178240, 2223620, 2287152, 2541280, 2613888, 2668344, 2858940, 3049536, 3267360, 3335430, 3557792, 3811920, 4002516, 4356480, 4447240, 4574304, 5003145, 5082560, 5336688, 5717880, 6099072, 6534720, 6670860, 7115584, 7623840, 8005032, 8894480, 9148608, 10006290, 10165120, 10673376, 11435760, 13069440, 13341720, 14231168, 15247680, 16010064, 17788960, 18297216, 20012580, 21346752, 22871520, 26683440, 30495360, 32020128, 35577920, 40025160, 42693504, 45743040, 53366880, 64040256, 71155840, 80050320, 91486080, 106733760, 128080512, 160100640, 213467520, 320201280, 640402560]

約数ペア:

[(1, 640402560), (2, 320201280), (3, 213467520), (4, 160100640), (5, 128080512), (6, 106733760), (7, 91486080), (8, 80050320), (9, 71155840), (10, 64040256), (12, 53366880), (14, 45743040), (15, 42693504), (16, 40025160), (18, 35577920), (20, 32020128), (21, 30495360), (24, 26683440), (28, 22871520), (30, 21346752), (32, 20012580), (35, 18297216), (36, 17788960), (40, 16010064), (42, 15247680), (45, 14231168), (48, 13341720), (49, 13069440), (56, 11435760), (60, 10673376), (63, 10165120), (64, 10006290), (70, 9148608), (72, 8894480), (80, 8005032), (84, 7623840), (90, 7115584), (96, 6670860), (98, 6534720), (105, 6099072), (112, 5717880), (120, 5336688), (126, 5082560), (128, 5003145), (140, 4574304), (144, 4447240), (147, 4356480), (160, 4002516), (168, 3811920), (180, 3557792), (192, 3335430), (196, 3267360), (210, 3049536), (224, 2858940), (240, 2668344), (245, 2613888), (252, 2541280), (280, 2287152), (288, 2223620), (294, 2178240), (315, 2033024), (320, 2001258), (336, 1905960), (360, 1778896), (384, 1667715), (392, 1633680), (420, 1524768), (441, 1452160), (448, 1429470), (480, 1334172), (490, 1306944), (504, 1270640), (560, 1143576), (576, 1111810), (588, 1089120), (630, 1016512), (640, 1000629), (672, 952980), (720, 889448), (735, 871296), (784, 816840), (840, 762384), (882, 726080), (896, 714735), (960, 667086), (980, 653472), (1008, 635320), (1120, 571788), (1152, 555905), (1176, 544560), (1260, 508256), (1344, 476490), (1440, 444724), (1470, 435648), (1568, 408420), (1680, 381192), (1764, 363040), (1920, 333543), (1960, 326736), (2016, 317660), (2205, 290432), (2240, 285894), (2269, 282240), (2352, 272280), (2520, 254128), (2688, 238245), (2880, 222362), (2940, 217824), (3136, 204210), (3360, 190596), (3528, 181520), (3920, 163368), (4032, 158830), (4410, 145216), (4480, 142947), (4538, 141120), (4704, 136140), (5040, 127064), (5760, 111181), (5880, 108912), (6272, 102105), (6720, 95298), (6807, 94080), (7056, 90760), (7840, 81684), (8064, 79415), (8820, 72608), (9076, 70560), (9408, 68070), (10080, 63532), (11345, 56448), (11760, 54456), (13440, 47649), (13614, 47040), (14112, 45380), (15680, 40842), (15883, 40320), (17640, 36304), (18152, 35280), (18816, 34035), (20160, 31766), (20421, 31360), (22690, 28224), (23520, 27228)]