64941260

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{8179}}^1$

素因数の和:8585

約数の個数: 24

約数和(自身を含む): 136736880

約数和(自身を除く): 71795620

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 8179, 16358, 32716, 40895, 81790, 163580, 3247063, 6494126, 12988252, 16235315, 32470630, 64941260]

約数ペア:

[(1, 64941260), (2, 32470630), (4, 16235315), (5, 12988252), (10, 6494126), (20, 3247063), (397, 163580), (794, 81790), (1588, 40895), (1985, 32716), (3970, 16358), (7940, 8179)]