21767300

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{1997}}^1$

素因数の和:2120

約数の個数: 36

約数和(自身を含む): 47692260

約数和(自身を除く): 25924960

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 218, 436, 545, 1090, 1997, 2180, 2725, 3994, 5450, 7988, 9985, 10900, 19970, 39940, 49925, 99850, 199700, 217673, 435346, 870692, 1088365, 2176730, 4353460, 5441825, 10883650, 21767300]

約数ペア:

[(1, 21767300), (2, 10883650), (4, 5441825), (5, 4353460), (10, 2176730), (20, 1088365), (25, 870692), (50, 435346), (100, 217673), (109, 199700), (218, 99850), (436, 49925), (545, 39940), (1090, 19970), (1997, 10900), (2180, 9985), (2725, 7988), (3994, 5450)]