128567943

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{65831}}^1$

素因数の和:65875

約数の個数: 24

約数和(自身を含む): 219088896

約数和(自身を除く): 90520953

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 65831, 197493, 460817, 592479, 1382451, 2040761, 4147353, 6122283, 14285327, 18366849, 42855981, 128567943]

約数ペア:

[(1, 128567943), (3, 42855981), (7, 18366849), (9, 14285327), (21, 6122283), (31, 4147353), (63, 2040761), (93, 1382451), (217, 592479), (279, 460817), (651, 197493), (1953, 65831)]