20200707

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{313}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 29978208

約数和(自身を除く): 9777501

約数列:

[1, 3, 9, 71, 101, 213, 303, 313, 639, 909, 939, 2817, 7171, 21513, 22223, 31613, 64539, 66669, 94839, 200007, 284517, 2244523, 6733569, 20200707]

約数ペア:

[(1, 20200707), (3, 6733569), (9, 2244523), (71, 284517), (101, 200007), (213, 94839), (303, 66669), (313, 64539), (639, 31613), (909, 22223), (939, 21513), (2817, 7171)]