81209920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23071}}^1$

素因数の和:23099

約数の個数: 56

約数和(自身を含む): 210970368

約数和(自身を除く): 129760448

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520, 23071, 46142, 92284, 115355, 184568, 230710, 253781, 369136, 461420, 507562, 738272, 922840, 1015124, 1268905, 1476544, 1845680, 2030248, 2537810, 3691360, 4060496, 5075620, 7382720, 8120992, 10151240, 16241984, 20302480, 40604960, 81209920]

約数ペア:

[(1, 81209920), (2, 40604960), (4, 20302480), (5, 16241984), (8, 10151240), (10, 8120992), (11, 7382720), (16, 5075620), (20, 4060496), (22, 3691360), (32, 2537810), (40, 2030248), (44, 1845680), (55, 1476544), (64, 1268905), (80, 1015124), (88, 922840), (110, 738272), (160, 507562), (176, 461420), (220, 369136), (320, 253781), (352, 230710), (440, 184568), (704, 115355), (880, 92284), (1760, 46142), (3520, 23071)]