8181820

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1307}}^1$

素因数の和:1629

約数の個数: 24

約数和(自身を含む): 17249904

約数和(自身を除く): 9068084

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1307, 1565, 2614, 3130, 5228, 6260, 6535, 13070, 26140, 409091, 818182, 1636364, 2045455, 4090910, 8181820]

約数ペア:

[(1, 8181820), (2, 4090910), (4, 2045455), (5, 1636364), (10, 818182), (20, 409091), (313, 26140), (626, 13070), (1252, 6535), (1307, 6260), (1565, 5228), (2614, 3130)]