21909231

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{167}}^1$

素因数の和:332

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 11798289

約数列:

[1, 3, 9, 27, 43, 113, 129, 167, 339, 387, 501, 1017, 1161, 1503, 3051, 4509, 4859, 7181, 14577, 18871, 21543, 43731, 56613, 64629, 131193, 169839, 193887, 509517, 811453, 2434359, 7303077, 21909231]

約数ペア:

[(1, 21909231), (3, 7303077), (9, 2434359), (27, 811453), (43, 509517), (113, 193887), (129, 169839), (167, 131193), (339, 64629), (387, 56613), (501, 43731), (1017, 21543), (1161, 18871), (1503, 14577), (3051, 7181), (4509, 4859)]