21813678

素因数分解:

$2^1\times 3^3\times {\mathrm{403957}}^1$

素因数の和:403968

約数の個数: 16

約数和(自身を含む): 48474960

約数和(自身を除く): 26661282

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 403957, 807914, 1211871, 2423742, 3635613, 7271226, 10906839, 21813678]

約数ペア:

[(1, 21813678), (2, 10906839), (3, 7271226), (6, 3635613), (9, 2423742), (18, 1211871), (27, 807914), (54, 403957)]