16521580

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{8179}}^1$

素因数の和:8289

約数の個数: 24

約数和(自身を含む): 35043120

約数和(自身を除く): 18521540

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 8179, 16358, 32716, 40895, 81790, 163580, 826079, 1652158, 3304316, 4130395, 8260790, 16521580]

約数ペア:

[(1, 16521580), (2, 8260790), (4, 4130395), (5, 3304316), (10, 1652158), (20, 826079), (101, 163580), (202, 81790), (404, 40895), (505, 32716), (1010, 16358), (2020, 8179)]