21250505

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{4507}}^1$

素因数の和:4576

約数の個数: 16

約数和(自身を含む): 27264384

約数和(自身を除く): 6013879

約数列:

[1, 5, 23, 41, 115, 205, 943, 4507, 4715, 22535, 103661, 184787, 518305, 923935, 4250101, 21250505]

約数ペア:

[(1, 21250505), (5, 4250101), (23, 923935), (41, 518305), (115, 184787), (205, 103661), (943, 22535), (4507, 4715)]