20989974

素因数分解:

$2^1\times 3^1\times {\mathrm{647}}^1\times {\mathrm{5407}}^1$

素因数の和:6059

約数の個数: 16

約数和(自身を含む): 42052608

約数和(自身を除く): 21062634

約数列:

[1, 2, 3, 6, 647, 1294, 1941, 3882, 5407, 10814, 16221, 32442, 3498329, 6996658, 10494987, 20989974]

約数ペア:

[(1, 20989974), (2, 10494987), (3, 6996658), (6, 3498329), (647, 32442), (1294, 16221), (1941, 10814), (3882, 5407)]