20642460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2309}}^1$

素因数の和:2470

約数の個数: 48

約数和(自身を含む): 58212000

約数和(自身を除く): 37569540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 149, 298, 447, 596, 745, 894, 1490, 1788, 2235, 2309, 2980, 4470, 4618, 6927, 8940, 9236, 11545, 13854, 23090, 27708, 34635, 46180, 69270, 138540, 344041, 688082, 1032123, 1376164, 1720205, 2064246, 3440410, 4128492, 5160615, 6880820, 10321230, 20642460]

約数ペア:

[(1, 20642460), (2, 10321230), (3, 6880820), (4, 5160615), (5, 4128492), (6, 3440410), (10, 2064246), (12, 1720205), (15, 1376164), (20, 1032123), (30, 688082), (60, 344041), (149, 138540), (298, 69270), (447, 46180), (596, 34635), (745, 27708), (894, 23090), (1490, 13854), (1788, 11545), (2235, 9236), (2309, 8940), (2980, 6927), (4470, 4618)]