20815310

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{122443}}^1$

素因数の和:122467

約数の個数: 16

約数和(自身を含む): 39671856

約数和(自身を除く): 18856546

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 122443, 244886, 612215, 1224430, 2081531, 4163062, 10407655, 20815310]

約数ペア:

[(1, 20815310), (2, 10407655), (5, 4163062), (10, 2081531), (17, 1224430), (34, 612215), (85, 244886), (170, 122443)]