21973293

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:465

約数の個数: 24

約数和(自身を含む): 32550336

約数和(自身を除く): 10577043

約数列:

[1, 3, 9, 71, 137, 213, 251, 411, 639, 753, 1233, 2259, 9727, 17821, 29181, 34387, 53463, 87543, 103161, 160389, 309483, 2441477, 7324431, 21973293]

約数ペア:

[(1, 21973293), (3, 7324431), (9, 2441477), (71, 309483), (137, 160389), (213, 103161), (251, 87543), (411, 53463), (639, 34387), (753, 29181), (1233, 17821), (2259, 9727)]