201557960

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{11969}}^1$

素因数の和:12401

約数の個数: 32

約数和(自身を含む): 454620600

約数和(自身を除く): 253062640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 11969, 16840, 23938, 47876, 59845, 95752, 119690, 239380, 478760, 5038949, 10077898, 20155796, 25194745, 40311592, 50389490, 100778980, 201557960]

約数ペア:

[(1, 201557960), (2, 100778980), (4, 50389490), (5, 40311592), (8, 25194745), (10, 20155796), (20, 10077898), (40, 5038949), (421, 478760), (842, 239380), (1684, 119690), (2105, 95752), (3368, 59845), (4210, 47876), (8420, 23938), (11969, 16840)]