20412745

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 26554176

約数和(自身を除く): 6141431

約数列:

[1, 5, 19, 43, 95, 215, 263, 361, 817, 1315, 1805, 4085, 4997, 11309, 15523, 24985, 56545, 77615, 94943, 214871, 474715, 1074355, 4082549, 20412745]

約数ペア:

[(1, 20412745), (5, 4082549), (19, 1074355), (43, 474715), (95, 214871), (215, 94943), (263, 77615), (361, 56545), (817, 24985), (1315, 15523), (1805, 11309), (4085, 4997)]