19905021215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{521}}^1\times {\mathrm{332221}}^1$

素因数の和:332770

約数の個数: 16

約数和(自身を含む): 24972463296

約数和(自身を除く): 5067442081

約数列:

[1, 5, 23, 115, 521, 2605, 11983, 59915, 332221, 1661105, 7641083, 38205415, 173087141, 865435705, 3981004243, 19905021215]

約数ペア:

[(1, 19905021215), (5, 3981004243), (23, 865435705), (115, 173087141), (521, 38205415), (2605, 7641083), (11983, 1661105), (59915, 332221)]