18824920

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1699}}^1$

素因数の和:1987

約数の個数: 32

約数和(自身を含む): 42534000

約数和(自身を除く): 23709080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 1699, 2216, 2770, 3398, 5540, 6796, 8495, 11080, 13592, 16990, 33980, 67960, 470623, 941246, 1882492, 2353115, 3764984, 4706230, 9412460, 18824920]

約数ペア:

[(1, 18824920), (2, 9412460), (4, 4706230), (5, 3764984), (8, 2353115), (10, 1882492), (20, 941246), (40, 470623), (277, 67960), (554, 33980), (1108, 16990), (1385, 13592), (1699, 11080), (2216, 8495), (2770, 6796), (3398, 5540)]