128911390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{678481}}^1$

素因数の和:678507

約数の個数: 16

約数和(自身を含む): 244253520

約数和(自身を除く): 115342130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 678481, 1356962, 3392405, 6784810, 12891139, 25782278, 64455695, 128911390]

約数ペア:

[(1, 128911390), (2, 64455695), (5, 25782278), (10, 12891139), (19, 6784810), (38, 3392405), (95, 1356962), (190, 678481)]