21613988

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44657}}^1$

素因数の和:44683

約数の個数: 18

約数和(自身を含む): 41576598

約数和(自身を除く): 19962610

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44657, 89314, 178628, 491227, 982454, 1964908, 5403497, 10806994, 21613988]

約数ペア:

[(1, 21613988), (2, 10806994), (4, 5403497), (11, 1964908), (22, 982454), (44, 491227), (121, 178628), (242, 89314), (484, 44657)]