20313625

素因数分解:

$5^3\times {\mathrm{101}}^1\times {\mathrm{1609}}^1$

素因数の和:1725

約数の個数: 16

約数和(自身を含む): 25618320

約数和(自身を除く): 5304695

約数列:

[1, 5, 25, 101, 125, 505, 1609, 2525, 8045, 12625, 40225, 162509, 201125, 812545, 4062725, 20313625]

約数ペア:

[(1, 20313625), (5, 4062725), (25, 812545), (101, 201125), (125, 162509), (505, 40225), (1609, 12625), (2525, 8045)]