18964900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{3109}}^1$

素因数の和:3184

約数の個数: 36

約数和(自身を含む): 41841940

約数和(自身を除く): 22877040

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 3109, 6100, 6218, 12436, 15545, 31090, 62180, 77725, 155450, 189649, 310900, 379298, 758596, 948245, 1896490, 3792980, 4741225, 9482450, 18964900]

約数ペア:

[(1, 18964900), (2, 9482450), (4, 4741225), (5, 3792980), (10, 1896490), (20, 948245), (25, 758596), (50, 379298), (61, 310900), (100, 189649), (122, 155450), (244, 77725), (305, 62180), (610, 31090), (1220, 15545), (1525, 12436), (3050, 6218), (3109, 6100)]