80736560

素因数分解:

$2^4\times 5^1\times {\mathrm{1009207}}^1$

素因数の和:1009220

約数の個数: 20

約数和(自身を含む): 187712688

約数和(自身を除く): 106976128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009207, 2018414, 4036828, 5046035, 8073656, 10092070, 16147312, 20184140, 40368280, 80736560]

約数ペア:

[(1, 80736560), (2, 40368280), (4, 20184140), (5, 16147312), (8, 10092070), (10, 8073656), (16, 5046035), (20, 4036828), (40, 2018414), (80, 1009207)]