18172580

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{2531}}^1$

素因数の和:2899

約数の個数: 24

約数和(自身を含む): 38283840

約数和(自身を除く): 20111260

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 2531, 3590, 5062, 7180, 10124, 12655, 25310, 50620, 908629, 1817258, 3634516, 4543145, 9086290, 18172580]

約数ペア:

[(1, 18172580), (2, 9086290), (4, 4543145), (5, 3634516), (10, 1817258), (20, 908629), (359, 50620), (718, 25310), (1436, 12655), (1795, 10124), (2531, 7180), (3590, 5062)]