18706420

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{3881}}^1$

素因数の和:4131

約数の個数: 24

約数和(自身を含む): 39456648

約数和(自身を除く): 20750228

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 3881, 4820, 7762, 15524, 19405, 38810, 77620, 935321, 1870642, 3741284, 4676605, 9353210, 18706420]

約数ペア:

[(1, 18706420), (2, 9353210), (4, 4676605), (5, 3741284), (10, 1870642), (20, 935321), (241, 77620), (482, 38810), (964, 19405), (1205, 15524), (2410, 7762), (3881, 4820)]