89769880

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2251}}^1$

素因数の和:3259

約数の個数: 32

約数和(自身を含む): 202274640

約数和(自身を除く): 112504760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 2251, 3988, 4502, 4985, 7976, 9004, 9970, 11255, 18008, 19940, 22510, 39880, 45020, 90040, 2244247, 4488494, 8976988, 11221235, 17953976, 22442470, 44884940, 89769880]

約数ペア:

[(1, 89769880), (2, 44884940), (4, 22442470), (5, 17953976), (8, 11221235), (10, 8976988), (20, 4488494), (40, 2244247), (997, 90040), (1994, 45020), (2251, 39880), (3988, 22510), (4502, 19940), (4985, 18008), (7976, 11255), (9004, 9970)]