64435340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{45377}}^1$

素因数の和:45457

約数の個数: 24

約数和(自身を含む): 137223072

約数和(自身を除く): 72787732

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 45377, 90754, 181508, 226885, 453770, 907540, 3221767, 6443534, 12887068, 16108835, 32217670, 64435340]

約数ペア:

[(1, 64435340), (2, 32217670), (4, 16108835), (5, 12887068), (10, 6443534), (20, 3221767), (71, 907540), (142, 453770), (284, 226885), (355, 181508), (710, 90754), (1420, 45377)]