21214753

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{193}}^1\times {\mathrm{383}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 25030656

約数和(自身を除く): 3815903

約数列:

[1, 7, 41, 193, 287, 383, 1351, 2681, 7913, 15703, 55391, 73919, 109921, 517433, 3030679, 21214753]

約数ペア:

[(1, 21214753), (7, 3030679), (41, 517433), (193, 109921), (287, 73919), (383, 55391), (1351, 15703), (2681, 7913)]