3985420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2239}}^1$

素因数の和:2337

約数の個数: 24

約数和(自身を含む): 8467200

約数和(自身を除く): 4481780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 2239, 4478, 8956, 11195, 22390, 44780, 199271, 398542, 797084, 996355, 1992710, 3985420]

約数ペア:

[(1, 3985420), (2, 1992710), (4, 996355), (5, 797084), (10, 398542), (20, 199271), (89, 44780), (178, 22390), (356, 11195), (445, 8956), (890, 4478), (1780, 2239)]