21687029

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3557}}^1$

素因数の和:3644

約数の個数: 16

約数和(自身を含む): 27097728

約数和(自身を除く): 5410699

約数列:

[1, 7, 13, 67, 91, 469, 871, 3557, 6097, 24899, 46241, 238319, 323687, 1668233, 3098147, 21687029]

約数ペア:

[(1, 21687029), (7, 3098147), (13, 1668233), (67, 323687), (91, 238319), (469, 46241), (871, 24899), (3557, 6097)]