20018943

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1613}}^1$

素因数の和:1823

約数の個数: 24

約数和(自身を含む): 33235488

約数和(自身を除く): 13216545

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1613, 1773, 4137, 4839, 11291, 12411, 14517, 33873, 101619, 317761, 953283, 2224327, 2859849, 6672981, 20018943]

約数ペア:

[(1, 20018943), (3, 6672981), (7, 2859849), (9, 2224327), (21, 953283), (63, 317761), (197, 101619), (591, 33873), (1379, 14517), (1613, 12411), (1773, 11291), (4137, 4839)]