20454740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60161}}^1$

素因数の和:60187

約数の個数: 24

約数和(自身を含む): 45482472

約数和(自身を除く): 25027732

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60161, 120322, 240644, 300805, 601610, 1022737, 1203220, 2045474, 4090948, 5113685, 10227370, 20454740]

約数ペア:

[(1, 20454740), (2, 10227370), (4, 5113685), (5, 4090948), (10, 2045474), (17, 1203220), (20, 1022737), (34, 601610), (68, 300805), (85, 240644), (170, 120322), (340, 60161)]