20615895

素因数分解:

$3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4723}}^1$

素因数の和:4831

約数の個数: 24

約数和(自身を含む): 36110256

約数和(自身を除く): 15494361

約数列:

[1, 3, 5, 9, 15, 45, 97, 291, 485, 873, 1455, 4365, 4723, 14169, 23615, 42507, 70845, 212535, 458131, 1374393, 2290655, 4123179, 6871965, 20615895]

約数ペア:

[(1, 20615895), (3, 6871965), (5, 4123179), (9, 2290655), (15, 1374393), (45, 458131), (97, 212535), (291, 70845), (485, 42507), (873, 23615), (1455, 14169), (4365, 4723)]