19704027

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{431}}^1$

素因数の和:759

約数の個数: 24

約数和(自身を含む): 30730752

約数和(自身を除く): 11026725

約数列:

[1, 3, 7, 21, 49, 147, 311, 431, 933, 1293, 2177, 3017, 6531, 9051, 15239, 21119, 45717, 63357, 134041, 402123, 938287, 2814861, 6568009, 19704027]

約数ペア:

[(1, 19704027), (3, 6568009), (7, 2814861), (21, 938287), (49, 402123), (147, 134041), (311, 63357), (431, 45717), (933, 21119), (1293, 15239), (2177, 9051), (3017, 6531)]