19975490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{68881}}^1$

素因数の和:68917

約数の個数: 16

約数和(自身を含む): 37196280

約数和(自身を除く): 17220790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 68881, 137762, 344405, 688810, 1997549, 3995098, 9987745, 19975490]

約数ペア:

[(1, 19975490), (2, 9987745), (5, 3995098), (10, 1997549), (29, 688810), (58, 344405), (145, 137762), (290, 68881)]