19911524

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{70111}}^1$

素因数の和:70186

約数の個数: 12

約数和(自身を含む): 35336448

約数和(自身を除く): 15424924

約数列:

[1, 2, 4, 71, 142, 284, 70111, 140222, 280444, 4977881, 9955762, 19911524]

約数ペア:

[(1, 19911524), (2, 9955762), (4, 4977881), (71, 280444), (142, 140222), (284, 70111)]