31390780

素因数分解:

$2^2\times 5^1\times {\mathrm{701}}^1\times {\mathrm{2239}}^1$

素因数の和:2949

約数の個数: 24

約数和(自身を含む): 66044160

約数和(自身を除く): 34653380

約数列:

[1, 2, 4, 5, 10, 20, 701, 1402, 2239, 2804, 3505, 4478, 7010, 8956, 11195, 14020, 22390, 44780, 1569539, 3139078, 6278156, 7847695, 15695390, 31390780]

約数ペア:

[(1, 31390780), (2, 15695390), (4, 7847695), (5, 6278156), (10, 3139078), (20, 1569539), (701, 44780), (1402, 22390), (2239, 14020), (2804, 11195), (3505, 8956), (4478, 7010)]