21856328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{210157}}^1$

素因数の和:210176

約数の個数: 16

約数和(自身を含む): 44133180

約数和(自身を除く): 22276852

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 210157, 420314, 840628, 1681256, 2732041, 5464082, 10928164, 21856328]

約数ペア:

[(1, 21856328), (2, 10928164), (4, 5464082), (8, 2732041), (13, 1681256), (26, 840628), (52, 420314), (104, 210157)]