54885620

素因数分解:

$2^2\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{2129}}^1$

素因数の和:3427

約数の個数: 24

約数和(自身を含む): 115403400

約数和(自身を除く): 60517780

約数列:

[1, 2, 4, 5, 10, 20, 1289, 2129, 2578, 4258, 5156, 6445, 8516, 10645, 12890, 21290, 25780, 42580, 2744281, 5488562, 10977124, 13721405, 27442810, 54885620]

約数ペア:

[(1, 54885620), (2, 27442810), (4, 13721405), (5, 10977124), (10, 5488562), (20, 2744281), (1289, 42580), (2129, 25780), (2578, 21290), (4258, 12890), (5156, 10645), (6445, 8516)]