20126709

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 30050592

約数和(自身を除く): 9923883

約数列:

[1, 3, 9, 43, 129, 131, 387, 393, 397, 1179, 1191, 3573, 5633, 16899, 17071, 50697, 51213, 52007, 153639, 156021, 468063, 2236301, 6708903, 20126709]

約数ペア:

[(1, 20126709), (3, 6708903), (9, 2236301), (43, 468063), (129, 156021), (131, 153639), (387, 52007), (393, 51213), (397, 50697), (1179, 17071), (1191, 16899), (3573, 5633)]