21304821920

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{20357}}^1$

素因数の和:20614

約数の個数: 96

約数和(自身を含む): 52205078016

約数和(自身を除く): 30900256096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 211, 248, 310, 422, 496, 620, 844, 992, 1055, 1240, 1688, 2110, 2480, 3376, 4220, 4960, 6541, 6752, 8440, 13082, 16880, 20357, 26164, 32705, 33760, 40714, 52328, 65410, 81428, 101785, 104656, 130820, 162856, 203570, 209312, 261640, 325712, 407140, 523280, 631067, 651424, 814280, 1046560, 1262134, 1628560, 2524268, 3155335, 3257120, 4295327, 5048536, 6310670, 8590654, 10097072, 12621340, 17181308, 20194144, 21476635, 25242680, 34362616, 42953270, 50485360, 68725232, 85906540, 100970720, 133155137, 137450464, 171813080, 266310274, 343626160, 532620548, 665775685, 687252320, 1065241096, 1331551370, 2130482192, 2663102740, 4260964384, 5326205480, 10652410960, 21304821920]

約数ペア:

[(1, 21304821920), (2, 10652410960), (4, 5326205480), (5, 4260964384), (8, 2663102740), (10, 2130482192), (16, 1331551370), (20, 1065241096), (31, 687252320), (32, 665775685), (40, 532620548), (62, 343626160), (80, 266310274), (124, 171813080), (155, 137450464), (160, 133155137), (211, 100970720), (248, 85906540), (310, 68725232), (422, 50485360), (496, 42953270), (620, 34362616), (844, 25242680), (992, 21476635), (1055, 20194144), (1240, 17181308), (1688, 12621340), (2110, 10097072), (2480, 8590654), (3376, 6310670), (4220, 5048536), (4960, 4295327), (6541, 3257120), (6752, 3155335), (8440, 2524268), (13082, 1628560), (16880, 1262134), (20357, 1046560), (26164, 814280), (32705, 651424), (33760, 631067), (40714, 523280), (52328, 407140), (65410, 325712), (81428, 261640), (101785, 209312), (104656, 203570), (130820, 162856)]