18325520

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{577}}^1$

素因数の和:987

約数の個数: 40

約数和(自身を含む): 42788184

約数和(自身を除く): 24462664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 577, 794, 1154, 1588, 1985, 2308, 2885, 3176, 3970, 4616, 5770, 6352, 7940, 9232, 11540, 15880, 23080, 31760, 46160, 229069, 458138, 916276, 1145345, 1832552, 2290690, 3665104, 4581380, 9162760, 18325520]

約数ペア:

[(1, 18325520), (2, 9162760), (4, 4581380), (5, 3665104), (8, 2290690), (10, 1832552), (16, 1145345), (20, 916276), (40, 458138), (80, 229069), (397, 46160), (577, 31760), (794, 23080), (1154, 15880), (1588, 11540), (1985, 9232), (2308, 7940), (2885, 6352), (3176, 5770), (3970, 4616)]