20390734

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{563}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 37900800

約数和(自身を除く): 17510066

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 199, 398, 563, 1126, 1393, 2587, 2786, 3941, 5174, 7319, 7882, 14638, 18109, 36218, 51233, 102466, 112037, 224074, 784259, 1456481, 1568518, 2912962, 10195367, 20390734]

約数ペア:

[(1, 20390734), (2, 10195367), (7, 2912962), (13, 1568518), (14, 1456481), (26, 784259), (91, 224074), (182, 112037), (199, 102466), (398, 51233), (563, 36218), (1126, 18109), (1393, 14638), (2587, 7882), (2786, 7319), (3941, 5174)]