20264560

素因数分解:

$2^4\times 5^1\times {\mathrm{253307}}^1$

素因数の和:253320

約数の個数: 20

約数和(自身を含む): 47115288

約数和(自身を除く): 26850728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253307, 506614, 1013228, 1266535, 2026456, 2533070, 4052912, 5066140, 10132280, 20264560]

約数ペア:

[(1, 20264560), (2, 10132280), (4, 5066140), (5, 4052912), (8, 2533070), (10, 2026456), (16, 1266535), (20, 1013228), (40, 506614), (80, 253307)]