21707516

素因数分解:

$2^2\times {\mathrm{59}}^2\times {\mathrm{1559}}^1$

素因数の和:1681

約数の個数: 18

約数和(自身を含む): 38667720

約数和(自身を除く): 16960204

約数列:

[1, 2, 4, 59, 118, 236, 1559, 3118, 3481, 6236, 6962, 13924, 91981, 183962, 367924, 5426879, 10853758, 21707516]

約数ペア:

[(1, 21707516), (2, 10853758), (4, 5426879), (59, 367924), (118, 183962), (236, 91981), (1559, 13924), (3118, 6962), (3481, 6236)]