12540140

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1277}}^1$

素因数の和:1777

約数の個数: 24

約数和(自身を含む): 26408592

約数和(自身を除く): 13868452

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1277, 1964, 2455, 2554, 4910, 5108, 6385, 9820, 12770, 25540, 627007, 1254014, 2508028, 3135035, 6270070, 12540140]

約数ペア:

[(1, 12540140), (2, 6270070), (4, 3135035), (5, 2508028), (10, 1254014), (20, 627007), (491, 25540), (982, 12770), (1277, 9820), (1964, 6385), (2455, 5108), (2554, 4910)]