78621880

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4951}}^1$

素因数の和:5359

約数の個数: 32

約数和(自身を含む): 177380640

約数和(自身を除く): 98758760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 4951, 7940, 9902, 15880, 19804, 24755, 39608, 49510, 99020, 198040, 1965547, 3931094, 7862188, 9827735, 15724376, 19655470, 39310940, 78621880]

約数ペア:

[(1, 78621880), (2, 39310940), (4, 19655470), (5, 15724376), (8, 9827735), (10, 7862188), (20, 3931094), (40, 1965547), (397, 198040), (794, 99020), (1588, 49510), (1985, 39608), (3176, 24755), (3970, 19804), (4951, 15880), (7940, 9902)]