20578518

素因数分解:

$2^1\times 3^2\times {\mathrm{401}}^1\times {\mathrm{2851}}^1$

素因数の和:3260

約数の個数: 24

約数和(自身を含む): 44713656

約数和(自身を除く): 24135138

約数列:

[1, 2, 3, 6, 9, 18, 401, 802, 1203, 2406, 2851, 3609, 5702, 7218, 8553, 17106, 25659, 51318, 1143251, 2286502, 3429753, 6859506, 10289259, 20578518]

約数ペア:

[(1, 20578518), (2, 10289259), (3, 6859506), (6, 3429753), (9, 2286502), (18, 1143251), (401, 51318), (802, 25659), (1203, 17106), (2406, 8553), (2851, 7218), (3609, 5702)]