20105217

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{653}}^1$

素因数の和:981

約数の個数: 24

約数和(自身を含む): 31831488

約数和(自身を除く): 11726271

約数列:

[1, 3, 9, 11, 33, 99, 311, 653, 933, 1959, 2799, 3421, 5877, 7183, 10263, 21549, 30789, 64647, 203083, 609249, 1827747, 2233913, 6701739, 20105217]

約数ペア:

[(1, 20105217), (3, 6701739), (9, 2233913), (11, 1827747), (33, 609249), (99, 203083), (311, 64647), (653, 30789), (933, 21549), (1959, 10263), (2799, 7183), (3421, 5877)]