20654410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2707}}^1$

素因数の和:2830

約数の個数: 32

約数和(自身を含む): 42894720

約数和(自身を除く): 22240310

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 109, 218, 545, 763, 1090, 1526, 2707, 3815, 5414, 7630, 13535, 18949, 27070, 37898, 94745, 189490, 295063, 590126, 1475315, 2065441, 2950630, 4130882, 10327205, 20654410]

約数ペア:

[(1, 20654410), (2, 10327205), (5, 4130882), (7, 2950630), (10, 2065441), (14, 1475315), (35, 590126), (70, 295063), (109, 189490), (218, 94745), (545, 37898), (763, 27070), (1090, 18949), (1526, 13535), (2707, 7630), (3815, 5414)]