21282080

素因数分解:

$2^5\times 5^1\times {\mathrm{133013}}^1$

素因数の和:133028

約数の個数: 24

約数和(自身を含む): 50279292

約数和(自身を除く): 28997212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133013, 266026, 532052, 665065, 1064104, 1330130, 2128208, 2660260, 4256416, 5320520, 10641040, 21282080]

約数ペア:

[(1, 21282080), (2, 10641040), (4, 5320520), (5, 4256416), (8, 2660260), (10, 2128208), (16, 1330130), (20, 1064104), (32, 665065), (40, 532052), (80, 266026), (160, 133013)]