1989897

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 3370752

約数和(自身を除く): 1380855

約数列:

[1, 3, 7, 13, 21, 37, 39, 91, 111, 197, 259, 273, 481, 591, 777, 1379, 1443, 2561, 3367, 4137, 7289, 7683, 10101, 17927, 21867, 51023, 53781, 94757, 153069, 284271, 663299, 1989897]

約数ペア:

[(1, 1989897), (3, 663299), (7, 284271), (13, 153069), (21, 94757), (37, 53781), (39, 51023), (91, 21867), (111, 17927), (197, 10101), (259, 7683), (273, 7289), (481, 4137), (591, 3367), (777, 2561), (1379, 1443)]