64702280

素因数分解:

$2^3\times 5^1\times {\mathrm{1617557}}^1$

素因数の和:1617568

約数の個数: 16

約数和(自身を含む): 145580220

約数和(自身を除く): 80877940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1617557, 3235114, 6470228, 8087785, 12940456, 16175570, 32351140, 64702280]

約数ペア:

[(1, 64702280), (2, 32351140), (4, 16175570), (5, 12940456), (8, 8087785), (10, 6470228), (20, 3235114), (40, 1617557)]