18889240

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12763}}^1$

素因数の和:12811

約数の個数: 32

約数和(自身を含む): 43652880

約数和(自身を除く): 24763640

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 12763, 25526, 51052, 63815, 102104, 127630, 255260, 472231, 510520, 944462, 1888924, 2361155, 3777848, 4722310, 9444620, 18889240]

約数ペア:

[(1, 18889240), (2, 9444620), (4, 4722310), (5, 3777848), (8, 2361155), (10, 1888924), (20, 944462), (37, 510520), (40, 472231), (74, 255260), (148, 127630), (185, 102104), (296, 63815), (370, 51052), (740, 25526), (1480, 12763)]