20037920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17891}}^1$

素因数の和:17913

約数の個数: 48

約数和(自身を含む): 54105408

約数和(自身を除く): 34067488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 17891, 35782, 71564, 89455, 125237, 143128, 178910, 250474, 286256, 357820, 500948, 572512, 626185, 715640, 1001896, 1252370, 1431280, 2003792, 2504740, 2862560, 4007584, 5009480, 10018960, 20037920]

約数ペア:

[(1, 20037920), (2, 10018960), (4, 5009480), (5, 4007584), (7, 2862560), (8, 2504740), (10, 2003792), (14, 1431280), (16, 1252370), (20, 1001896), (28, 715640), (32, 626185), (35, 572512), (40, 500948), (56, 357820), (70, 286256), (80, 250474), (112, 178910), (140, 143128), (160, 125237), (224, 89455), (280, 71564), (560, 35782), (1120, 17891)]