18242920

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3329}}^1$

素因数の和:3477

約数の個数: 32

約数和(自身を含む): 41358600

約数和(自身を除く): 23115680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3329, 5480, 6658, 13316, 16645, 26632, 33290, 66580, 133160, 456073, 912146, 1824292, 2280365, 3648584, 4560730, 9121460, 18242920]

約数ペア:

[(1, 18242920), (2, 9121460), (4, 4560730), (5, 3648584), (8, 2280365), (10, 1824292), (20, 912146), (40, 456073), (137, 133160), (274, 66580), (548, 33290), (685, 26632), (1096, 16645), (1370, 13316), (2740, 6658), (3329, 5480)]