20899460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61469}}^1$

素因数の和:61495

約数の個数: 24

約数和(自身を含む): 46471320

約数和(自身を除く): 25571860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61469, 122938, 245876, 307345, 614690, 1044973, 1229380, 2089946, 4179892, 5224865, 10449730, 20899460]

約数ペア:

[(1, 20899460), (2, 10449730), (4, 5224865), (5, 4179892), (10, 2089946), (17, 1229380), (20, 1044973), (34, 614690), (68, 307345), (85, 245876), (170, 122938), (340, 61469)]