19708209

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 29427840

約数和(自身を除く): 9719631

約数列:

[1, 3, 9, 53, 79, 159, 237, 477, 523, 711, 1569, 4187, 4707, 12561, 27719, 37683, 41317, 83157, 123951, 249471, 371853, 2189801, 6569403, 19708209]

約数ペア:

[(1, 19708209), (3, 6569403), (9, 2189801), (53, 371853), (79, 249471), (159, 123951), (237, 83157), (477, 41317), (523, 37683), (711, 27719), (1569, 12561), (4187, 4707)]