20656764

素因数分解:

$2^2\times 3^2\times {\mathrm{149}}^1\times {\mathrm{3851}}^1$

素因数の和:4010

約数の個数: 36

約数和(自身を含む): 52579800

約数和(自身を除く): 31923036

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 149, 298, 447, 596, 894, 1341, 1788, 2682, 3851, 5364, 7702, 11553, 15404, 23106, 34659, 46212, 69318, 138636, 573799, 1147598, 1721397, 2295196, 3442794, 5164191, 6885588, 10328382, 20656764]

約数ペア:

[(1, 20656764), (2, 10328382), (3, 6885588), (4, 5164191), (6, 3442794), (9, 2295196), (12, 1721397), (18, 1147598), (36, 573799), (149, 138636), (298, 69318), (447, 46212), (596, 34659), (894, 23106), (1341, 15404), (1788, 11553), (2682, 7702), (3851, 5364)]