1920980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{691}}^1$

素因数の和:839

約数の個数: 24

約数和(自身を含む): 4068960

約数和(自身を除く): 2147980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 691, 695, 1382, 1390, 2764, 2780, 3455, 6910, 13820, 96049, 192098, 384196, 480245, 960490, 1920980]

約数ペア:

[(1, 1920980), (2, 960490), (4, 480245), (5, 384196), (10, 192098), (20, 96049), (139, 13820), (278, 6910), (556, 3455), (691, 2780), (695, 2764), (1382, 1390)]