21919240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78283}}^1$

素因数の和:78301

約数の個数: 32

約数和(自身を含む): 56364480

約数和(自身を除く): 34445240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78283, 156566, 313132, 391415, 547981, 626264, 782830, 1095962, 1565660, 2191924, 2739905, 3131320, 4383848, 5479810, 10959620, 21919240]

約数ペア:

[(1, 21919240), (2, 10959620), (4, 5479810), (5, 4383848), (7, 3131320), (8, 2739905), (10, 2191924), (14, 1565660), (20, 1095962), (28, 782830), (35, 626264), (40, 547981), (56, 391415), (70, 313132), (140, 156566), (280, 78283)]