19218842020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137277443}}^1$

素因数の和:137277459

約数の個数: 24

約数和(自身を含む): 46125221184

約数和(自身を除く): 26906379164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 137277443, 274554886, 549109772, 686387215, 960942101, 1372774430, 1921884202, 2745548860, 3843768404, 4804710505, 9609421010, 19218842020]

約数ペア:

[(1, 19218842020), (2, 9609421010), (4, 4804710505), (5, 3843768404), (7, 2745548860), (10, 1921884202), (14, 1372774430), (20, 960942101), (28, 686387215), (35, 549109772), (70, 274554886), (140, 137277443)]