640485440

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:293

約数の個数: 224

約数和(自身を含む): 1865376000

約数和(自身を除く): 1224890560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 101, 112, 133, 140, 149, 152, 160, 190, 202, 224, 266, 280, 298, 304, 320, 380, 404, 448, 505, 532, 560, 596, 608, 665, 707, 745, 760, 808, 1010, 1043, 1064, 1120, 1192, 1216, 1330, 1414, 1490, 1520, 1616, 1919, 2020, 2086, 2128, 2240, 2384, 2660, 2828, 2831, 2980, 3040, 3232, 3535, 3838, 4040, 4172, 4256, 4768, 5215, 5320, 5656, 5662, 5960, 6080, 6464, 7070, 7676, 8080, 8344, 8512, 9536, 9595, 10430, 10640, 11312, 11324, 11920, 13433, 14140, 14155, 15049, 15352, 16160, 16688, 19190, 19817, 20860, 21280, 22624, 22648, 23840, 26866, 28280, 28310, 30098, 30704, 32320, 33376, 38380, 39634, 41720, 42560, 45248, 45296, 47680, 53732, 56560, 56620, 60196, 61408, 66752, 67165, 75245, 76760, 79268, 83440, 90592, 99085, 105343, 107464, 113120, 113240, 120392, 122816, 134330, 150490, 153520, 158536, 166880, 181184, 198170, 210686, 214928, 226240, 226480, 240784, 268660, 285931, 300980, 307040, 317072, 333760, 396340, 421372, 429856, 452960, 481568, 526715, 537320, 571862, 601960, 614080, 634144, 792680, 842744, 859712, 905920, 963136, 1053430, 1074640, 1143724, 1203920, 1268288, 1429655, 1585360, 1685488, 2001517, 2106860, 2149280, 2287448, 2407840, 2859310, 3170720, 3370976, 4003034, 4213720, 4298560, 4574896, 4815680, 5718620, 6341440, 6741952, 8006068, 8427440, 9149792, 10007585, 11437240, 16012136, 16854880, 18299584, 20015170, 22874480, 32024272, 33709760, 40030340, 45748960, 64048544, 80060680, 91497920, 128097088, 160121360, 320242720, 640485440]

約数ペア:

[(1, 640485440), (2, 320242720), (4, 160121360), (5, 128097088), (7, 91497920), (8, 80060680), (10, 64048544), (14, 45748960), (16, 40030340), (19, 33709760), (20, 32024272), (28, 22874480), (32, 20015170), (35, 18299584), (38, 16854880), (40, 16012136), (56, 11437240), (64, 10007585), (70, 9149792), (76, 8427440), (80, 8006068), (95, 6741952), (101, 6341440), (112, 5718620), (133, 4815680), (140, 4574896), (149, 4298560), (152, 4213720), (160, 4003034), (190, 3370976), (202, 3170720), (224, 2859310), (266, 2407840), (280, 2287448), (298, 2149280), (304, 2106860), (320, 2001517), (380, 1685488), (404, 1585360), (448, 1429655), (505, 1268288), (532, 1203920), (560, 1143724), (596, 1074640), (608, 1053430), (665, 963136), (707, 905920), (745, 859712), (760, 842744), (808, 792680), (1010, 634144), (1043, 614080), (1064, 601960), (1120, 571862), (1192, 537320), (1216, 526715), (1330, 481568), (1414, 452960), (1490, 429856), (1520, 421372), (1616, 396340), (1919, 333760), (2020, 317072), (2086, 307040), (2128, 300980), (2240, 285931), (2384, 268660), (2660, 240784), (2828, 226480), (2831, 226240), (2980, 214928), (3040, 210686), (3232, 198170), (3535, 181184), (3838, 166880), (4040, 158536), (4172, 153520), (4256, 150490), (4768, 134330), (5215, 122816), (5320, 120392), (5656, 113240), (5662, 113120), (5960, 107464), (6080, 105343), (6464, 99085), (7070, 90592), (7676, 83440), (8080, 79268), (8344, 76760), (8512, 75245), (9536, 67165), (9595, 66752), (10430, 61408), (10640, 60196), (11312, 56620), (11324, 56560), (11920, 53732), (13433, 47680), (14140, 45296), (14155, 45248), (15049, 42560), (15352, 41720), (16160, 39634), (16688, 38380), (19190, 33376), (19817, 32320), (20860, 30704), (21280, 30098), (22624, 28310), (22648, 28280), (23840, 26866)]