20505969

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4817}}^1$

素因数の和:4877

約数の個数: 24

約数和(自身を含む): 33070752

約数和(自身を除く): 12564783

約数列:

[1, 3, 9, 11, 33, 43, 99, 129, 387, 473, 1419, 4257, 4817, 14451, 43353, 52987, 158961, 207131, 476883, 621393, 1864179, 2278441, 6835323, 20505969]

約数ペア:

[(1, 20505969), (3, 6835323), (9, 2278441), (11, 1864179), (33, 621393), (43, 476883), (99, 207131), (129, 158961), (387, 52987), (473, 43353), (1419, 14451), (4257, 4817)]