20611540

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7867}}^1$

素因数の和:8007

約数の個数: 24

約数和(自身を含む): 43620192

約数和(自身を除く): 23008652

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7867, 15734, 31468, 39335, 78670, 157340, 1030577, 2061154, 4122308, 5152885, 10305770, 20611540]

約数ペア:

[(1, 20611540), (2, 10305770), (4, 5152885), (5, 4122308), (10, 2061154), (20, 1030577), (131, 157340), (262, 78670), (524, 39335), (655, 31468), (1310, 15734), (2620, 7867)]