20921980080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1429097}}^1$

素因数の和:1429174

約数の個数: 80

約数和(自身を含む): 65921432544

約数和(自身を除く): 44999452464

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1464, 1830, 2440, 2928, 3660, 4880, 7320, 14640, 1429097, 2858194, 4287291, 5716388, 7145485, 8574582, 11432776, 14290970, 17149164, 21436455, 22865552, 28581940, 34298328, 42872910, 57163880, 68596656, 85745820, 87174917, 114327760, 171491640, 174349834, 261524751, 342983280, 348699668, 435874585, 523049502, 697399336, 871749170, 1046099004, 1307623755, 1394798672, 1743498340, 2092198008, 2615247510, 3486996680, 4184396016, 5230495020, 6973993360, 10460990040, 20921980080]

約数ペア:

[(1, 20921980080), (2, 10460990040), (3, 6973993360), (4, 5230495020), (5, 4184396016), (6, 3486996680), (8, 2615247510), (10, 2092198008), (12, 1743498340), (15, 1394798672), (16, 1307623755), (20, 1046099004), (24, 871749170), (30, 697399336), (40, 523049502), (48, 435874585), (60, 348699668), (61, 342983280), (80, 261524751), (120, 174349834), (122, 171491640), (183, 114327760), (240, 87174917), (244, 85745820), (305, 68596656), (366, 57163880), (488, 42872910), (610, 34298328), (732, 28581940), (915, 22865552), (976, 21436455), (1220, 17149164), (1464, 14290970), (1830, 11432776), (2440, 8574582), (2928, 7145485), (3660, 5716388), (4880, 4287291), (7320, 2858194), (14640, 1429097)]