661027775

素因数分解:

$5^2\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{3323}}^1$

素因数の和:3515

約数の個数: 24

約数和(自身を含む): 838778160

約数和(自身を除く): 177750385

約数列:

[1, 5, 25, 73, 109, 365, 545, 1825, 2725, 3323, 7957, 16615, 39785, 83075, 198925, 242579, 362207, 1212895, 1811035, 6064475, 9055175, 26441111, 132205555, 661027775]

約数ペア:

[(1, 661027775), (5, 132205555), (25, 26441111), (73, 9055175), (109, 6064475), (365, 1811035), (545, 1212895), (1825, 362207), (2725, 242579), (3323, 198925), (7957, 83075), (16615, 39785)]