77890480

素因数分解:

$2^4\times 5^1\times {\mathrm{973631}}^1$

素因数の和:973644

約数の個数: 20

約数和(自身を含む): 181095552

約数和(自身を除く): 103205072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 973631, 1947262, 3894524, 4868155, 7789048, 9736310, 15578096, 19472620, 38945240, 77890480]

約数ペア:

[(1, 77890480), (2, 38945240), (4, 19472620), (5, 15578096), (8, 9736310), (10, 7789048), (16, 4868155), (20, 3894524), (40, 1947262), (80, 973631)]