19782160

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2311}}^1$

素因数の和:2431

約数の個数: 40

約数和(自身を含む): 46443456

約数和(自身を除く): 26661296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2311, 4280, 4622, 8560, 9244, 11555, 18488, 23110, 36976, 46220, 92440, 184880, 247277, 494554, 989108, 1236385, 1978216, 2472770, 3956432, 4945540, 9891080, 19782160]

約数ペア:

[(1, 19782160), (2, 9891080), (4, 4945540), (5, 3956432), (8, 2472770), (10, 1978216), (16, 1236385), (20, 989108), (40, 494554), (80, 247277), (107, 184880), (214, 92440), (428, 46220), (535, 36976), (856, 23110), (1070, 18488), (1712, 11555), (2140, 9244), (2311, 8560), (4280, 4622)]