19565975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{421}}^1$

素因数の和:468

約数の個数: 36

約数和(自身を含む): 28728072

約数和(自身を除く): 9162097

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 169, 275, 325, 421, 715, 845, 1859, 2105, 3575, 4225, 4631, 5473, 9295, 10525, 23155, 27365, 46475, 60203, 71149, 115775, 136825, 301015, 355745, 782639, 1505075, 1778725, 3913195, 19565975]

約数ペア:

[(1, 19565975), (5, 3913195), (11, 1778725), (13, 1505075), (25, 782639), (55, 355745), (65, 301015), (143, 136825), (169, 115775), (275, 71149), (325, 60203), (421, 46475), (715, 27365), (845, 23155), (1859, 10525), (2105, 9295), (3575, 5473), (4225, 4631)]