21178460

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9371}}^1$

素因数の和:9493

約数の個数: 24

約数和(自身を含む): 44873136

約数和(自身を除く): 23694676

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9371, 18742, 37484, 46855, 93710, 187420, 1058923, 2117846, 4235692, 5294615, 10589230, 21178460]

約数ペア:

[(1, 21178460), (2, 10589230), (4, 5294615), (5, 4235692), (10, 2117846), (20, 1058923), (113, 187420), (226, 93710), (452, 46855), (565, 37484), (1130, 18742), (2260, 9371)]