20149521

素因数分解:

$3^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1483}}^1$

素因数の和:2140

約数の個数: 16

約数和(自身を含む): 30772224

約数和(自身を除く): 10622703

約数列:

[1, 3, 7, 21, 647, 1483, 1941, 4449, 4529, 10381, 13587, 31143, 959501, 2878503, 6716507, 20149521]

約数ペア:

[(1, 20149521), (3, 6716507), (7, 2878503), (21, 959501), (647, 31143), (1483, 13587), (1941, 10381), (4449, 4529)]