640436880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{29983}}^1$

素因数の和:30088

約数の個数: 80

約数和(自身を含む): 2007728640

約数和(自身を除く): 1367291760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 240, 267, 356, 445, 534, 712, 890, 1068, 1335, 1424, 1780, 2136, 2670, 3560, 4272, 5340, 7120, 10680, 21360, 29983, 59966, 89949, 119932, 149915, 179898, 239864, 299830, 359796, 449745, 479728, 599660, 719592, 899490, 1199320, 1439184, 1798980, 2398640, 2668487, 3597960, 5336974, 7195920, 8005461, 10673948, 13342435, 16010922, 21347896, 26684870, 32021844, 40027305, 42695792, 53369740, 64043688, 80054610, 106739480, 128087376, 160109220, 213478960, 320218440, 640436880]

約数ペア:

[(1, 640436880), (2, 320218440), (3, 213478960), (4, 160109220), (5, 128087376), (6, 106739480), (8, 80054610), (10, 64043688), (12, 53369740), (15, 42695792), (16, 40027305), (20, 32021844), (24, 26684870), (30, 21347896), (40, 16010922), (48, 13342435), (60, 10673948), (80, 8005461), (89, 7195920), (120, 5336974), (178, 3597960), (240, 2668487), (267, 2398640), (356, 1798980), (445, 1439184), (534, 1199320), (712, 899490), (890, 719592), (1068, 599660), (1335, 479728), (1424, 449745), (1780, 359796), (2136, 299830), (2670, 239864), (3560, 179898), (4272, 149915), (5340, 119932), (7120, 89949), (10680, 59966), (21360, 29983)]