21351690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1811}}^1$

素因数の和:1955

約数の個数: 48

約数和(自身を含む): 55969056

約数和(自身を除く): 34617366

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 131, 262, 393, 655, 786, 1179, 1310, 1811, 1965, 2358, 3622, 3930, 5433, 5895, 9055, 10866, 11790, 16299, 18110, 27165, 32598, 54330, 81495, 162990, 237241, 474482, 711723, 1186205, 1423446, 2135169, 2372410, 3558615, 4270338, 7117230, 10675845, 21351690]

約数ペア:

[(1, 21351690), (2, 10675845), (3, 7117230), (5, 4270338), (6, 3558615), (9, 2372410), (10, 2135169), (15, 1423446), (18, 1186205), (30, 711723), (45, 474482), (90, 237241), (131, 162990), (262, 81495), (393, 54330), (655, 32598), (786, 27165), (1179, 18110), (1310, 16299), (1811, 11790), (1965, 10866), (2358, 9055), (3622, 5895), (3930, 5433)]