640644480

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{15889}}^1$

素因数の和:15921

約数の個数: 192

約数和(自身を含む): 2528416800

約数和(自身を除く): 1887772320

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, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 1008, 1120, 1152, 1260, 1344, 1440, 1680, 1920, 2016, 2240, 2520, 2688, 2880, 3360, 4032, 4480, 5040, 5760, 6720, 8064, 10080, 13440, 15889, 20160, 31778, 40320, 47667, 63556, 79445, 95334, 111223, 127112, 143001, 158890, 190668, 222446, 238335, 254224, 286002, 317780, 333669, 381336, 444892, 476670, 508448, 556115, 572004, 635560, 667338, 715005, 762672, 889784, 953340, 1001007, 1016896, 1112230, 1144008, 1271120, 1334676, 1430010, 1525344, 1668345, 1779568, 1906680, 2002014, 2033792, 2224460, 2288016, 2542240, 2669352, 2860020, 3050688, 3336690, 3559136, 3813360, 4004028, 4448920, 4576032, 5005035, 5084480, 5338704, 5720040, 6101376, 6673380, 7118272, 7626720, 8008056, 8897840, 9152064, 10010070, 10168960, 10677408, 11440080, 13346760, 14236544, 15253440, 16016112, 17795680, 18304128, 20020140, 21354816, 22880160, 26693520, 30506880, 32032224, 35591360, 40040280, 42709632, 45760320, 53387040, 64064448, 71182720, 80080560, 91520640, 106774080, 128128896, 160161120, 213548160, 320322240, 640644480]

約数ペア:

[(1, 640644480), (2, 320322240), (3, 213548160), (4, 160161120), (5, 128128896), (6, 106774080), (7, 91520640), (8, 80080560), (9, 71182720), (10, 64064448), (12, 53387040), (14, 45760320), (15, 42709632), (16, 40040280), (18, 35591360), (20, 32032224), (21, 30506880), (24, 26693520), (28, 22880160), (30, 21354816), (32, 20020140), (35, 18304128), (36, 17795680), (40, 16016112), (42, 15253440), (45, 14236544), (48, 13346760), (56, 11440080), (60, 10677408), (63, 10168960), (64, 10010070), (70, 9152064), (72, 8897840), (80, 8008056), (84, 7626720), (90, 7118272), (96, 6673380), (105, 6101376), (112, 5720040), (120, 5338704), (126, 5084480), (128, 5005035), (140, 4576032), (144, 4448920), (160, 4004028), (168, 3813360), (180, 3559136), (192, 3336690), (210, 3050688), (224, 2860020), (240, 2669352), (252, 2542240), (280, 2288016), (288, 2224460), (315, 2033792), (320, 2002014), (336, 1906680), (360, 1779568), (384, 1668345), (420, 1525344), (448, 1430010), (480, 1334676), (504, 1271120), (560, 1144008), (576, 1112230), (630, 1016896), (640, 1001007), (672, 953340), (720, 889784), (840, 762672), (896, 715005), (960, 667338), (1008, 635560), (1120, 572004), (1152, 556115), (1260, 508448), (1344, 476670), (1440, 444892), (1680, 381336), (1920, 333669), (2016, 317780), (2240, 286002), (2520, 254224), (2688, 238335), (2880, 222446), (3360, 190668), (4032, 158890), (4480, 143001), (5040, 127112), (5760, 111223), (6720, 95334), (8064, 79445), (10080, 63556), (13440, 47667), (15889, 40320), (20160, 31778)]