78409360

素因数分解:

$2^4\times 5^1\times {\mathrm{980117}}^1$

素因数の和:980130

約数の個数: 20

約数和(自身を含む): 182301948

約数和(自身を除く): 103892588

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 980117, 1960234, 3920468, 4900585, 7840936, 9801170, 15681872, 19602340, 39204680, 78409360]

約数ペア:

[(1, 78409360), (2, 39204680), (4, 19602340), (5, 15681872), (8, 9801170), (10, 7840936), (16, 4900585), (20, 3920468), (40, 1960234), (80, 980117)]