20740518

素因数分解:

$2^1\times 3^2\times {\mathrm{1039}}^1\times {\mathrm{1109}}^1$

素因数の和:2156

約数の個数: 24

約数和(自身を含む): 45021600

約数和(自身を除く): 24281082

約数列:

[1, 2, 3, 6, 9, 18, 1039, 1109, 2078, 2218, 3117, 3327, 6234, 6654, 9351, 9981, 18702, 19962, 1152251, 2304502, 3456753, 6913506, 10370259, 20740518]

約数ペア:

[(1, 20740518), (2, 10370259), (3, 6913506), (6, 3456753), (9, 2304502), (18, 1152251), (1039, 19962), (1109, 18702), (2078, 9981), (2218, 9351), (3117, 6654), (3327, 6234)]