19917051

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{571}}^1$

素因数の和:743

約数の個数: 32

約数和(自身を含む): 33386496

約数和(自身を除く): 13469445

約数列:

[1, 3, 7, 11, 21, 33, 77, 151, 231, 453, 571, 1057, 1661, 1713, 3171, 3997, 4983, 6281, 11627, 11991, 18843, 34881, 43967, 86221, 131901, 258663, 603547, 948431, 1810641, 2845293, 6639017, 19917051]

約数ペア:

[(1, 19917051), (3, 6639017), (7, 2845293), (11, 1810641), (21, 948431), (33, 603547), (77, 258663), (151, 131901), (231, 86221), (453, 43967), (571, 34881), (1057, 18843), (1661, 11991), (1713, 11627), (3171, 6281), (3997, 4983)]