20971210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12409}}^1$

素因数の和:12442

約数の個数: 24

約数和(自身を含む): 40878540

約数和(自身を除く): 19907330

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12409, 24818, 62045, 124090, 161317, 322634, 806585, 1613170, 2097121, 4194242, 10485605, 20971210]

約数ペア:

[(1, 20971210), (2, 10485605), (5, 4194242), (10, 2097121), (13, 1613170), (26, 806585), (65, 322634), (130, 161317), (169, 124090), (338, 62045), (845, 24818), (1690, 12409)]