2489840

素因数分解:

$2^4\times 5^1\times {\mathrm{31123}}^1$

素因数の和:31136

約数の個数: 20

約数和(自身を含む): 5789064

約数和(自身を除く): 3299224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 31123, 62246, 124492, 155615, 248984, 311230, 497968, 622460, 1244920, 2489840]

約数ペア:

[(1, 2489840), (2, 1244920), (4, 622460), (5, 497968), (8, 311230), (10, 248984), (16, 155615), (20, 124492), (40, 62246), (80, 31123)]