291269225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{1609}}^1$

素因数の和:2189

約数の個数: 24

約数和(自身を含む): 389896920

約数和(自身を除く): 98627695

約数列:

[1, 5, 13, 25, 65, 325, 557, 1609, 2785, 7241, 8045, 13925, 20917, 36205, 40225, 104585, 181025, 522925, 896213, 4481065, 11650769, 22405325, 58253845, 291269225]

約数ペア:

[(1, 291269225), (5, 58253845), (13, 22405325), (25, 11650769), (65, 4481065), (325, 896213), (557, 522925), (1609, 181025), (2785, 104585), (7241, 40225), (8045, 36205), (13925, 20917)]