12728020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{6301}}^1$

素因数の和:6411

約数の個数: 24

約数和(自身を含む): 26997768

約数和(自身を除く): 14269748

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 6301, 12602, 25204, 31505, 63010, 126020, 636401, 1272802, 2545604, 3182005, 6364010, 12728020]

約数ペア:

[(1, 12728020), (2, 6364010), (4, 3182005), (5, 2545604), (10, 1272802), (20, 636401), (101, 126020), (202, 63010), (404, 31505), (505, 25204), (1010, 12602), (2020, 6301)]