21400132

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31657}}^1$

素因数の和:31687

約数の個数: 18

約数和(自身を含む): 40553898

約数和(自身を除く): 19153766

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31657, 63314, 126628, 411541, 823082, 1646164, 5350033, 10700066, 21400132]

約数ペア:

[(1, 21400132), (2, 10700066), (4, 5350033), (13, 1646164), (26, 823082), (52, 411541), (169, 126628), (338, 63314), (676, 31657)]