21386510

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{125803}}^1$

素因数の和:125827

約数の個数: 16

約数和(自身を含む): 40760496

約数和(自身を除く): 19373986

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 125803, 251606, 629015, 1258030, 2138651, 4277302, 10693255, 21386510]

約数ペア:

[(1, 21386510), (2, 10693255), (5, 4277302), (10, 2138651), (17, 1258030), (34, 629015), (85, 251606), (170, 125803)]