131781680

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{23201}}^1$

素因数の和:23285

約数の個数: 40

約数和(自身を含む): 310721184

約数和(自身を除く): 178939504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 23201, 46402, 92804, 116005, 185608, 232010, 371216, 464020, 928040, 1647271, 1856080, 3294542, 6589084, 8236355, 13178168, 16472710, 26356336, 32945420, 65890840, 131781680]

約数ペア:

[(1, 131781680), (2, 65890840), (4, 32945420), (5, 26356336), (8, 16472710), (10, 13178168), (16, 8236355), (20, 6589084), (40, 3294542), (71, 1856080), (80, 1647271), (142, 928040), (284, 464020), (355, 371216), (568, 232010), (710, 185608), (1136, 116005), (1420, 92804), (2840, 46402), (5680, 23201)]