17987905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 24514560

約数和(自身を除く): 6526655

約数列:

[1, 5, 13, 31, 65, 79, 113, 155, 395, 403, 565, 1027, 1469, 2015, 2449, 3503, 5135, 7345, 8927, 12245, 17515, 31837, 44635, 45539, 116051, 159185, 227695, 276737, 580255, 1383685, 3597581, 17987905]

約数ペア:

[(1, 17987905), (5, 3597581), (13, 1383685), (31, 580255), (65, 276737), (79, 227695), (113, 159185), (155, 116051), (395, 45539), (403, 44635), (565, 31837), (1027, 17515), (1469, 12245), (2015, 8927), (2449, 7345), (3503, 5135)]