19491771

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 9780549

約数列:

[1, 3, 13, 39, 43, 59, 129, 177, 197, 559, 591, 767, 1677, 2301, 2537, 2561, 7611, 7683, 8471, 11623, 25413, 32981, 34869, 98943, 110123, 151099, 330369, 453297, 499789, 1499367, 6497257, 19491771]

約数ペア:

[(1, 19491771), (3, 6497257), (13, 1499367), (39, 499789), (43, 453297), (59, 330369), (129, 151099), (177, 110123), (197, 98943), (559, 34869), (591, 32981), (767, 25413), (1677, 11623), (2301, 8471), (2537, 7683), (2561, 7611)]