20017137

素因数分解:

$3^1\times 7^5\times {\mathrm{397}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 31215936

約数和(自身を除く): 11198799

約数列:

[1, 3, 7, 21, 49, 147, 343, 397, 1029, 1191, 2401, 2779, 7203, 8337, 16807, 19453, 50421, 58359, 136171, 408513, 953197, 2859591, 6672379, 20017137]

約数ペア:

[(1, 20017137), (3, 6672379), (7, 2859591), (21, 953197), (49, 408513), (147, 136171), (343, 58359), (397, 50421), (1029, 19453), (1191, 16807), (2401, 8337), (2779, 7203)]