30815140

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3881}}^1$

素因数の和:4287

約数の個数: 24

約数和(自身を含む): 64891512

約数和(自身を除く): 34076372

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3881, 3970, 7762, 7940, 15524, 19405, 38810, 77620, 1540757, 3081514, 6163028, 7703785, 15407570, 30815140]

約数ペア:

[(1, 30815140), (2, 15407570), (4, 7703785), (5, 6163028), (10, 3081514), (20, 1540757), (397, 77620), (794, 38810), (1588, 19405), (1985, 15524), (3881, 7940), (3970, 7762)]