20671900

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^2\times {\mathrm{151}}^1$

素因数の和:239

約数の個数: 54

約数和(自身を含む): 46408488

約数和(自身を除く): 25736588

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 148, 151, 185, 302, 370, 604, 740, 755, 925, 1369, 1510, 1850, 2738, 3020, 3700, 3775, 5476, 5587, 6845, 7550, 11174, 13690, 15100, 22348, 27380, 27935, 34225, 55870, 68450, 111740, 136900, 139675, 206719, 279350, 413438, 558700, 826876, 1033595, 2067190, 4134380, 5167975, 10335950, 20671900]

約数ペア:

[(1, 20671900), (2, 10335950), (4, 5167975), (5, 4134380), (10, 2067190), (20, 1033595), (25, 826876), (37, 558700), (50, 413438), (74, 279350), (100, 206719), (148, 139675), (151, 136900), (185, 111740), (302, 68450), (370, 55870), (604, 34225), (740, 27935), (755, 27380), (925, 22348), (1369, 15100), (1510, 13690), (1850, 11174), (2738, 7550), (3020, 6845), (3700, 5587), (3775, 5476)]