64613960

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{15683}}^1$

素因数の和:15797

約数の個数: 32

約数和(自身を含む): 146802240

約数和(自身を除く): 82188280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 15683, 31366, 62732, 78415, 125464, 156830, 313660, 627320, 1615349, 3230698, 6461396, 8076745, 12922792, 16153490, 32306980, 64613960]

約数ペア:

[(1, 64613960), (2, 32306980), (4, 16153490), (5, 12922792), (8, 8076745), (10, 6461396), (20, 3230698), (40, 1615349), (103, 627320), (206, 313660), (412, 156830), (515, 125464), (824, 78415), (1030, 62732), (2060, 31366), (4120, 15683)]