68878840

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{8161}}^1$

素因数の和:8383

約数の個数: 32

約数和(自身を含む): 155730960

約数和(自身を除く): 86852120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8161, 8440, 16322, 32644, 40805, 65288, 81610, 163220, 326440, 1721971, 3443942, 6887884, 8609855, 13775768, 17219710, 34439420, 68878840]

約数ペア:

[(1, 68878840), (2, 34439420), (4, 17219710), (5, 13775768), (8, 8609855), (10, 6887884), (20, 3443942), (40, 1721971), (211, 326440), (422, 163220), (844, 81610), (1055, 65288), (1688, 40805), (2110, 32644), (4220, 16322), (8161, 8440)]