21942850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:487

約数の個数: 48

約数和(自身を含む): 43468200

約数和(自身を除く): 21525350

約数列:

[1, 2, 5, 10, 25, 29, 37, 50, 58, 74, 145, 185, 290, 370, 409, 725, 818, 925, 1073, 1450, 1850, 2045, 2146, 4090, 5365, 10225, 10730, 11861, 15133, 20450, 23722, 26825, 30266, 53650, 59305, 75665, 118610, 151330, 296525, 378325, 438857, 593050, 756650, 877714, 2194285, 4388570, 10971425, 21942850]

約数ペア:

[(1, 21942850), (2, 10971425), (5, 4388570), (10, 2194285), (25, 877714), (29, 756650), (37, 593050), (50, 438857), (58, 378325), (74, 296525), (145, 151330), (185, 118610), (290, 75665), (370, 59305), (409, 53650), (725, 30266), (818, 26825), (925, 23722), (1073, 20450), (1450, 15133), (1850, 11861), (2045, 10730), (2146, 10225), (4090, 5365)]