1998980

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{787}}^1$

素因数の和:923

約数の個数: 24

約数和(自身を含む): 4236288

約数和(自身を除く): 2237308

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 787, 1270, 1574, 2540, 3148, 3935, 7870, 15740, 99949, 199898, 399796, 499745, 999490, 1998980]

約数ペア:

[(1, 1998980), (2, 999490), (4, 499745), (5, 399796), (10, 199898), (20, 99949), (127, 15740), (254, 7870), (508, 3935), (635, 3148), (787, 2540), (1270, 1574)]