80947840

素因数分解:

$2^7\times 5^1\times {\mathrm{126481}}^1$

素因数の和:126500

約数の個数: 32

約数和(自身を含む): 193517460

約数和(自身を除く): 112569620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126481, 252962, 505924, 632405, 1011848, 1264810, 2023696, 2529620, 4047392, 5059240, 8094784, 10118480, 16189568, 20236960, 40473920, 80947840]

約数ペア:

[(1, 80947840), (2, 40473920), (4, 20236960), (5, 16189568), (8, 10118480), (10, 8094784), (16, 5059240), (20, 4047392), (32, 2529620), (40, 2023696), (64, 1264810), (80, 1011848), (128, 632405), (160, 505924), (320, 252962), (640, 126481)]