21612090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{720403}}^1$

素因数の和:720413

約数の個数: 16

約数和(自身を含む): 51869088

約数和(自身を除く): 30256998

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 720403, 1440806, 2161209, 3602015, 4322418, 7204030, 10806045, 21612090]

約数ペア:

[(1, 21612090), (2, 10806045), (3, 7204030), (5, 4322418), (6, 3602015), (10, 2161209), (15, 1440806), (30, 720403)]