19806490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{16369}}^1$

素因数の和:16398

約数の個数: 24

約数和(自身を含む): 39189780

約数和(自身を除く): 19383290

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 16369, 32738, 81845, 163690, 180059, 360118, 900295, 1800590, 1980649, 3961298, 9903245, 19806490]

約数ペア:

[(1, 19806490), (2, 9903245), (5, 3961298), (10, 1980649), (11, 1800590), (22, 900295), (55, 360118), (110, 180059), (121, 163690), (242, 81845), (605, 32738), (1210, 16369)]