128661129

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{51239}}^1$

素因数の和:51282

約数の個数: 20

約数和(自身を含む): 198401280

約数和(自身を除く): 69740151

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 51239, 153717, 461151, 1383453, 1588409, 4150359, 4765227, 14295681, 42887043, 128661129]

約数ペア:

[(1, 128661129), (3, 42887043), (9, 14295681), (27, 4765227), (31, 4150359), (81, 1588409), (93, 1383453), (279, 461151), (837, 153717), (2511, 51239)]