20165420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1291}}^1$

素因数の和:1382

約数の個数: 48

約数和(自身を含む): 46884096

約数和(自身を除く): 26718676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1291, 1420, 1562, 2582, 3124, 3905, 5164, 6455, 7810, 12910, 14201, 15620, 25820, 28402, 56804, 71005, 91661, 142010, 183322, 284020, 366644, 458305, 916610, 1008271, 1833220, 2016542, 4033084, 5041355, 10082710, 20165420]

約数ペア:

[(1, 20165420), (2, 10082710), (4, 5041355), (5, 4033084), (10, 2016542), (11, 1833220), (20, 1008271), (22, 916610), (44, 458305), (55, 366644), (71, 284020), (110, 183322), (142, 142010), (220, 91661), (284, 71005), (355, 56804), (710, 28402), (781, 25820), (1291, 15620), (1420, 14201), (1562, 12910), (2582, 7810), (3124, 6455), (3905, 5164)]