21690249

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{60757}}^1$

素因数の和:60784

約数の個数: 16

約数和(自身を含む): 34996608

約数和(自身を除く): 13306359

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 60757, 182271, 425299, 1032869, 1275897, 3098607, 7230083, 21690249]

約数ペア:

[(1, 21690249), (3, 7230083), (7, 3098607), (17, 1275897), (21, 1032869), (51, 425299), (119, 182271), (357, 60757)]