131288240

素因数分解:

$2^4\times 5^1\times {\mathrm{1641103}}^1$

素因数の和:1641116

約数の個数: 20

約数和(自身を含む): 305245344

約数和(自身を除く): 173957104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1641103, 3282206, 6564412, 8205515, 13128824, 16411030, 26257648, 32822060, 65644120, 131288240]

約数ペア:

[(1, 131288240), (2, 65644120), (4, 32822060), (5, 26257648), (8, 16411030), (10, 13128824), (16, 8205515), (20, 6564412), (40, 3282206), (80, 1641103)]