6640940

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1489}}^1$

素因数の和:1721

約数の個数: 24

約数和(自身を含む): 14017920

約数和(自身を除く): 7376980

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 1489, 2230, 2978, 4460, 5956, 7445, 14890, 29780, 332047, 664094, 1328188, 1660235, 3320470, 6640940]

約数ペア:

[(1, 6640940), (2, 3320470), (4, 1660235), (5, 1328188), (10, 664094), (20, 332047), (223, 29780), (446, 14890), (892, 7445), (1115, 5956), (1489, 4460), (2230, 2978)]