20905220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149323}}^1$

素因数の和:149339

約数の個数: 24

約数和(自身を含む): 50172864

約数和(自身を除く): 29267644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149323, 298646, 597292, 746615, 1045261, 1493230, 2090522, 2986460, 4181044, 5226305, 10452610, 20905220]

約数ペア:

[(1, 20905220), (2, 10452610), (4, 5226305), (5, 4181044), (7, 2986460), (10, 2090522), (14, 1493230), (20, 1045261), (28, 746615), (35, 597292), (70, 298646), (140, 149323)]