21351711

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{499}}^1\times {\mathrm{839}}^1$

素因数の和:1358

約数の個数: 16

約数和(自身を含む): 30240000

約数和(自身を除く): 8888289

約数列:

[1, 3, 17, 51, 499, 839, 1497, 2517, 8483, 14263, 25449, 42789, 418661, 1255983, 7117237, 21351711]

約数ペア:

[(1, 21351711), (3, 7117237), (17, 1255983), (51, 418661), (499, 42789), (839, 25449), (1497, 14263), (2517, 8483)]