647551240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{32573}}^1$

素因数の和:32662

約数の個数: 64

約数和(自身を含む): 1688636160

約数和(自身を除く): 1041084920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3976, 4970, 9940, 19880, 32573, 65146, 130292, 162865, 228011, 260584, 325730, 456022, 651460, 912044, 1140055, 1302920, 1824088, 2280110, 2312683, 4560220, 4625366, 9120440, 9250732, 11563415, 16188781, 18501464, 23126830, 32377562, 46253660, 64755124, 80943905, 92507320, 129510248, 161887810, 323775620, 647551240]

約数ペア:

[(1, 647551240), (2, 323775620), (4, 161887810), (5, 129510248), (7, 92507320), (8, 80943905), (10, 64755124), (14, 46253660), (20, 32377562), (28, 23126830), (35, 18501464), (40, 16188781), (56, 11563415), (70, 9250732), (71, 9120440), (140, 4625366), (142, 4560220), (280, 2312683), (284, 2280110), (355, 1824088), (497, 1302920), (568, 1140055), (710, 912044), (994, 651460), (1420, 456022), (1988, 325730), (2485, 260584), (2840, 228011), (3976, 162865), (4970, 130292), (9940, 65146), (19880, 32573)]