20995510

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123503}}^1$

素因数の和:123527

約数の個数: 16

約数和(自身を含む): 40015296

約数和(自身を除く): 19019786

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123503, 247006, 617515, 1235030, 2099551, 4199102, 10497755, 20995510]

約数ペア:

[(1, 20995510), (2, 10497755), (5, 4199102), (10, 2099551), (17, 1235030), (34, 617515), (85, 247006), (170, 123503)]