20972620

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5323}}^1$

素因数の和:5529

約数の個数: 24

約数和(自身を含む): 44274384

約数和(自身を除く): 23301764

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5323, 10646, 21292, 26615, 53230, 106460, 1048631, 2097262, 4194524, 5243155, 10486310, 20972620]

約数ペア:

[(1, 20972620), (2, 10486310), (4, 5243155), (5, 4194524), (10, 2097262), (20, 1048631), (197, 106460), (394, 53230), (788, 26615), (985, 21292), (1970, 10646), (3940, 5323)]