19748780

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1429}}^1$

素因数の和:2129

約数の個数: 24

約数和(自身を含む): 41561520

約数和(自身を除く): 21812740

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 1429, 2764, 2858, 3455, 5716, 6910, 7145, 13820, 14290, 28580, 987439, 1974878, 3949756, 4937195, 9874390, 19748780]

約数ペア:

[(1, 19748780), (2, 9874390), (4, 4937195), (5, 3949756), (10, 1974878), (20, 987439), (691, 28580), (1382, 14290), (1429, 13820), (2764, 7145), (2858, 6910), (3455, 5716)]