21696003

素因数分解:

$3^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{661}}^1$

素因数の和:1195

約数の個数: 24

約数和(自身を含む): 35938656

約数和(自身を除く): 14242653

約数列:

[1, 3, 7, 9, 21, 63, 521, 661, 1563, 1983, 3647, 4627, 4689, 5949, 10941, 13881, 32823, 41643, 344381, 1033143, 2410667, 3099429, 7232001, 21696003]

約数ペア:

[(1, 21696003), (3, 7232001), (7, 3099429), (9, 2410667), (21, 1033143), (63, 344381), (521, 41643), (661, 32823), (1563, 13881), (1983, 10941), (3647, 5949), (4627, 4689)]