258400660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1845719}}^1$

素因数の和:1845735

約数の個数: 24

約数和(自身を含む): 620161920

約数和(自身を除く): 361761260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1845719, 3691438, 7382876, 9228595, 12920033, 18457190, 25840066, 36914380, 51680132, 64600165, 129200330, 258400660]

約数ペア:

[(1, 258400660), (2, 129200330), (4, 64600165), (5, 51680132), (7, 36914380), (10, 25840066), (14, 18457190), (20, 12920033), (28, 9228595), (35, 7382876), (70, 3691438), (140, 1845719)]