21173878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{5039}}^1$

素因数の和:5243

約数の個数: 16

約数和(自身を含む): 34836480

約数和(自身を除く): 13662602

約数列:

[1, 2, 11, 22, 191, 382, 2101, 4202, 5039, 10078, 55429, 110858, 962449, 1924898, 10586939, 21173878]

約数ペア:

[(1, 21173878), (2, 10586939), (11, 1924898), (22, 962449), (191, 110858), (382, 55429), (2101, 10078), (4202, 5039)]