1296640

素因数分解:

$2^8\times 5^1\times {\mathrm{1013}}^1$

素因数の和:1034

約数の個数: 36

約数和(自身を含む): 3108924

約数和(自身を除く): 1812284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1013, 1280, 2026, 4052, 5065, 8104, 10130, 16208, 20260, 32416, 40520, 64832, 81040, 129664, 162080, 259328, 324160, 648320, 1296640]

約数ペア:

[(1, 1296640), (2, 648320), (4, 324160), (5, 259328), (8, 162080), (10, 129664), (16, 81040), (20, 64832), (32, 40520), (40, 32416), (64, 20260), (80, 16208), (128, 10130), (160, 8104), (256, 5065), (320, 4052), (640, 2026), (1013, 1280)]