20217138

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{3407}}^1$

素因数の和:3478

約数の個数: 32

約数和(自身を含む): 43186176

約数和(自身を除く): 22969038

約数列:

[1, 2, 3, 6, 23, 43, 46, 69, 86, 129, 138, 258, 989, 1978, 2967, 3407, 5934, 6814, 10221, 20442, 78361, 146501, 156722, 235083, 293002, 439503, 470166, 879006, 3369523, 6739046, 10108569, 20217138]

約数ペア:

[(1, 20217138), (2, 10108569), (3, 6739046), (6, 3369523), (23, 879006), (43, 470166), (46, 439503), (69, 293002), (86, 235083), (129, 156722), (138, 146501), (258, 78361), (989, 20442), (1978, 10221), (2967, 6814), (3407, 5934)]