81763280

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5351}}^1$

素因数の和:5555

約数の個数: 40

約数和(自身を含む): 191130624

約数和(自身を除く): 109367344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1528, 1910, 3056, 3820, 5351, 7640, 10702, 15280, 21404, 26755, 42808, 53510, 85616, 107020, 214040, 428080, 1022041, 2044082, 4088164, 5110205, 8176328, 10220410, 16352656, 20440820, 40881640, 81763280]

約数ペア:

[(1, 81763280), (2, 40881640), (4, 20440820), (5, 16352656), (8, 10220410), (10, 8176328), (16, 5110205), (20, 4088164), (40, 2044082), (80, 1022041), (191, 428080), (382, 214040), (764, 107020), (955, 85616), (1528, 53510), (1910, 42808), (3056, 26755), (3820, 21404), (5351, 15280), (7640, 10702)]