20821948

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39139}}^1$

素因数の和:39169

約数の個数: 24

約数和(自身を含む): 43836800

約数和(自身を除く): 23014852

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39139, 78278, 156556, 273973, 547946, 743641, 1095892, 1487282, 2974564, 5205487, 10410974, 20821948]

約数ペア:

[(1, 20821948), (2, 10410974), (4, 5205487), (7, 2974564), (14, 1487282), (19, 1095892), (28, 743641), (38, 547946), (76, 273973), (133, 156556), (266, 78278), (532, 39139)]