21580452840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{81707}}^1$

素因数の和:81823

約数の個数: 128

約数和(自身を含む): 67771883520

約数和(自身を除く): 46191430680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 71, 93, 120, 124, 142, 155, 186, 213, 248, 284, 310, 355, 372, 426, 465, 568, 620, 710, 744, 852, 930, 1065, 1240, 1420, 1704, 1860, 2130, 2201, 2840, 3720, 4260, 4402, 6603, 8520, 8804, 11005, 13206, 17608, 22010, 26412, 33015, 44020, 52824, 66030, 81707, 88040, 132060, 163414, 245121, 264120, 326828, 408535, 490242, 653656, 817070, 980484, 1225605, 1634140, 1960968, 2451210, 2532917, 3268280, 4902420, 5065834, 5801197, 7598751, 9804840, 10131668, 11602394, 12664585, 15197502, 17403591, 20263336, 23204788, 25329170, 29005985, 30395004, 34807182, 37993755, 46409576, 50658340, 58011970, 60790008, 69614364, 75987510, 87017955, 101316680, 116023940, 139228728, 151975020, 174035910, 179837107, 232047880, 303950040, 348071820, 359674214, 539511321, 696143640, 719348428, 899185535, 1079022642, 1438696856, 1798371070, 2158045284, 2697556605, 3596742140, 4316090568, 5395113210, 7193484280, 10790226420, 21580452840]

約数ペア:

[(1, 21580452840), (2, 10790226420), (3, 7193484280), (4, 5395113210), (5, 4316090568), (6, 3596742140), (8, 2697556605), (10, 2158045284), (12, 1798371070), (15, 1438696856), (20, 1079022642), (24, 899185535), (30, 719348428), (31, 696143640), (40, 539511321), (60, 359674214), (62, 348071820), (71, 303950040), (93, 232047880), (120, 179837107), (124, 174035910), (142, 151975020), (155, 139228728), (186, 116023940), (213, 101316680), (248, 87017955), (284, 75987510), (310, 69614364), (355, 60790008), (372, 58011970), (426, 50658340), (465, 46409576), (568, 37993755), (620, 34807182), (710, 30395004), (744, 29005985), (852, 25329170), (930, 23204788), (1065, 20263336), (1240, 17403591), (1420, 15197502), (1704, 12664585), (1860, 11602394), (2130, 10131668), (2201, 9804840), (2840, 7598751), (3720, 5801197), (4260, 5065834), (4402, 4902420), (6603, 3268280), (8520, 2532917), (8804, 2451210), (11005, 1960968), (13206, 1634140), (17608, 1225605), (22010, 980484), (26412, 817070), (33015, 653656), (44020, 490242), (52824, 408535), (66030, 326828), (81707, 264120), (88040, 245121), (132060, 163414)]