321405520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:441

約数の個数: 120

約数和(自身を含む): 816376320

約数和(自身を除く): 494970800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 359, 361, 380, 496, 589, 620, 718, 722, 760, 1178, 1240, 1436, 1444, 1520, 1795, 1805, 2356, 2480, 2872, 2888, 2945, 3590, 3610, 4712, 5744, 5776, 5890, 6821, 7180, 7220, 9424, 11129, 11191, 11780, 13642, 14360, 14440, 22258, 22382, 23560, 27284, 28720, 28880, 34105, 44516, 44764, 47120, 54568, 55645, 55955, 68210, 89032, 89528, 109136, 111290, 111910, 129599, 136420, 178064, 179056, 211451, 222580, 223820, 259198, 272840, 422902, 445160, 447640, 518396, 545680, 647995, 845804, 890320, 895280, 1036792, 1057255, 1295990, 1691608, 2073584, 2114510, 2591980, 3383216, 4017569, 4229020, 5183960, 8035138, 8458040, 10367920, 16070276, 16916080, 20087845, 32140552, 40175690, 64281104, 80351380, 160702760, 321405520]

約数ペア:

[(1, 321405520), (2, 160702760), (4, 80351380), (5, 64281104), (8, 40175690), (10, 32140552), (16, 20087845), (19, 16916080), (20, 16070276), (31, 10367920), (38, 8458040), (40, 8035138), (62, 5183960), (76, 4229020), (80, 4017569), (95, 3383216), (124, 2591980), (152, 2114510), (155, 2073584), (190, 1691608), (248, 1295990), (304, 1057255), (310, 1036792), (359, 895280), (361, 890320), (380, 845804), (496, 647995), (589, 545680), (620, 518396), (718, 447640), (722, 445160), (760, 422902), (1178, 272840), (1240, 259198), (1436, 223820), (1444, 222580), (1520, 211451), (1795, 179056), (1805, 178064), (2356, 136420), (2480, 129599), (2872, 111910), (2888, 111290), (2945, 109136), (3590, 89528), (3610, 89032), (4712, 68210), (5744, 55955), (5776, 55645), (5890, 54568), (6821, 47120), (7180, 44764), (7220, 44516), (9424, 34105), (11129, 28880), (11191, 28720), (11780, 27284), (13642, 23560), (14360, 22382), (14440, 22258)]