20871145

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{1117}}^1$

素因数の和:1260

約数の個数: 16

約数和(自身を含む): 26000208

約数和(自身を除く): 5129063

約数列:

[1, 5, 37, 101, 185, 505, 1117, 3737, 5585, 18685, 41329, 112817, 206645, 564085, 4174229, 20871145]

約数ペア:

[(1, 20871145), (5, 4174229), (37, 564085), (101, 206645), (185, 112817), (505, 41329), (1117, 18685), (3737, 5585)]