21370880

素因数分解:

$2^{11}\times 5^1\times {\mathrm{2087}}^1$

素因数の和:2114

約数の個数: 48

約数和(自身を含む): 51302160

約数和(自身を除く): 29931280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2087, 2560, 4174, 5120, 8348, 10240, 10435, 16696, 20870, 33392, 41740, 66784, 83480, 133568, 166960, 267136, 333920, 534272, 667840, 1068544, 1335680, 2137088, 2671360, 4274176, 5342720, 10685440, 21370880]

約数ペア:

[(1, 21370880), (2, 10685440), (4, 5342720), (5, 4274176), (8, 2671360), (10, 2137088), (16, 1335680), (20, 1068544), (32, 667840), (40, 534272), (64, 333920), (80, 267136), (128, 166960), (160, 133568), (256, 83480), (320, 66784), (512, 41740), (640, 33392), (1024, 20870), (1280, 16696), (2048, 10435), (2087, 10240), (2560, 8348), (4174, 5120)]