64415660

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{3923}}^1$

素因数の和:4753

約数の個数: 24

約数和(自身を含む): 135472176

約数和(自身を除く): 71056516

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 3923, 4105, 7846, 8210, 15692, 16420, 19615, 39230, 78460, 3220783, 6441566, 12883132, 16103915, 32207830, 64415660]

約数ペア:

[(1, 64415660), (2, 32207830), (4, 16103915), (5, 12883132), (10, 6441566), (20, 3220783), (821, 78460), (1642, 39230), (3284, 19615), (3923, 16420), (4105, 15692), (7846, 8210)]