20728560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86369}}^1$

素因数の和:86385

約数の個数: 40

約数和(自身を含む): 64259280

約数和(自身を除く): 43530720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86369, 172738, 259107, 345476, 431845, 518214, 690952, 863690, 1036428, 1295535, 1381904, 1727380, 2072856, 2591070, 3454760, 4145712, 5182140, 6909520, 10364280, 20728560]

約数ペア:

[(1, 20728560), (2, 10364280), (3, 6909520), (4, 5182140), (5, 4145712), (6, 3454760), (8, 2591070), (10, 2072856), (12, 1727380), (15, 1381904), (16, 1295535), (20, 1036428), (24, 863690), (30, 690952), (40, 518214), (48, 431845), (60, 345476), (80, 259107), (120, 172738), (240, 86369)]