20568320

素因数分解:

$2^8\times 5^1\times {\mathrm{16069}}^1$

素因数の和:16090

約数の個数: 36

約数和(自身を含む): 49270620

約数和(自身を除く): 28702300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16069, 32138, 64276, 80345, 128552, 160690, 257104, 321380, 514208, 642760, 1028416, 1285520, 2056832, 2571040, 4113664, 5142080, 10284160, 20568320]

約数ペア:

[(1, 20568320), (2, 10284160), (4, 5142080), (5, 4113664), (8, 2571040), (10, 2056832), (16, 1285520), (20, 1028416), (32, 642760), (40, 514208), (64, 321380), (80, 257104), (128, 160690), (160, 128552), (256, 80345), (320, 64276), (640, 32138), (1280, 16069)]