20737017

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3259}}^1$

素因数の和:3373

約数の個数: 24

約数和(自身を含む): 34582080

約数和(自身を除く): 13845063

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 707, 909, 2121, 3259, 6363, 9777, 22813, 29331, 68439, 205317, 329159, 987477, 2304113, 2962431, 6912339, 20737017]

約数ペア:

[(1, 20737017), (3, 6912339), (7, 2962431), (9, 2304113), (21, 987477), (63, 329159), (101, 205317), (303, 68439), (707, 29331), (909, 22813), (2121, 9777), (3259, 6363)]