18237820

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{6961}}^1$

素因数の和:7101

約数の個数: 24

約数和(自身を含む): 38597328

約数和(自身を除く): 20359508

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 6961, 13922, 27844, 34805, 69610, 139220, 911891, 1823782, 3647564, 4559455, 9118910, 18237820]

約数ペア:

[(1, 18237820), (2, 9118910), (4, 4559455), (5, 3647564), (10, 1823782), (20, 911891), (131, 139220), (262, 69610), (524, 34805), (655, 27844), (1310, 13922), (2620, 6961)]