21009794

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{19709}}^1$

素因数の和:19765

約数の個数: 16

約数和(自身を含む): 34768440

約数和(自身を除く): 13758646

約数列:

[1, 2, 13, 26, 41, 82, 533, 1066, 19709, 39418, 256217, 512434, 808069, 1616138, 10504897, 21009794]

約数ペア:

[(1, 21009794), (2, 10504897), (13, 1616138), (26, 808069), (41, 512434), (82, 256217), (533, 39418), (1066, 19709)]