19691541

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{433}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 29609216

約数和(自身を除く): 9917675

約数列:

[1, 3, 9, 31, 93, 163, 279, 433, 489, 1299, 1467, 3897, 5053, 13423, 15159, 40269, 45477, 70579, 120807, 211737, 635211, 2187949, 6563847, 19691541]

約数ペア:

[(1, 19691541), (3, 6563847), (9, 2187949), (31, 635211), (93, 211737), (163, 120807), (279, 70579), (433, 45477), (489, 40269), (1299, 15159), (1467, 13423), (3897, 5053)]