20187432009

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17387969}}^1$

素因数の和:17388021

約数の個数: 16

約数和(自身を含む): 30602827200

約数和(自身を除く): 10415395191

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17387969, 52163907, 156491721, 469475163, 747682667, 2243048001, 6729144003, 20187432009]

約数ペア:

[(1, 20187432009), (3, 6729144003), (9, 2243048001), (27, 747682667), (43, 469475163), (129, 156491721), (387, 52163907), (1161, 17387969)]