21372956

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44159}}^1$

素因数の和:44185

約数の個数: 18

約数和(自身を含む): 41112960

約数和(自身を除く): 19740004

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44159, 88318, 176636, 485749, 971498, 1942996, 5343239, 10686478, 21372956]

約数ペア:

[(1, 21372956), (2, 10686478), (4, 5343239), (11, 1942996), (22, 971498), (44, 485749), (121, 176636), (242, 88318), (484, 44159)]