78491120

素因数分解:

$2^4\times 5^1\times {\mathrm{981139}}^1$

素因数の和:981152

約数の個数: 20

約数和(自身を含む): 182492040

約数和(自身を除く): 104000920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 981139, 1962278, 3924556, 4905695, 7849112, 9811390, 15698224, 19622780, 39245560, 78491120]

約数ペア:

[(1, 78491120), (2, 39245560), (4, 19622780), (5, 15698224), (8, 9811390), (10, 7849112), (16, 4905695), (20, 3924556), (40, 1962278), (80, 981139)]