128499880

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{68351}}^1$

素因数の和:68409

約数の個数: 32

約数和(自身を含む): 295280640

約数和(自身を除く): 166780760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 68351, 136702, 273404, 341755, 546808, 683510, 1367020, 2734040, 3212497, 6424994, 12849988, 16062485, 25699976, 32124970, 64249940, 128499880]

約数ペア:

[(1, 128499880), (2, 64249940), (4, 32124970), (5, 25699976), (8, 16062485), (10, 12849988), (20, 6424994), (40, 3212497), (47, 2734040), (94, 1367020), (188, 683510), (235, 546808), (376, 341755), (470, 273404), (940, 136702), (1880, 68351)]