19845147

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1063}}^1$

素因数の和:1207

約数の個数: 24

約数和(自身を含む): 31051776

約数和(自身を除く): 11206629

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 1063, 2667, 3189, 6223, 7441, 18669, 22323, 52087, 135001, 156261, 405003, 945007, 2835021, 6615049, 19845147]

約数ペア:

[(1, 19845147), (3, 6615049), (7, 2835021), (21, 945007), (49, 405003), (127, 156261), (147, 135001), (381, 52087), (889, 22323), (1063, 18669), (2667, 7441), (3189, 6223)]