78401240

素因数分解:

$2^3\times 5^1\times {\mathrm{1103}}^1\times {\mathrm{1777}}^1$

素因数の和:2891

約数の個数: 32

約数和(自身を含む): 176662080

約数和(自身を除く): 98260840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1103, 1777, 2206, 3554, 4412, 5515, 7108, 8824, 8885, 11030, 14216, 17770, 22060, 35540, 44120, 71080, 1960031, 3920062, 7840124, 9800155, 15680248, 19600310, 39200620, 78401240]

約数ペア:

[(1, 78401240), (2, 39200620), (4, 19600310), (5, 15680248), (8, 9800155), (10, 7840124), (20, 3920062), (40, 1960031), (1103, 71080), (1777, 44120), (2206, 35540), (3554, 22060), (4412, 17770), (5515, 14216), (7108, 11030), (8824, 8885)]