78501680

素因数分解:

$2^4\times 5^1\times {\mathrm{981271}}^1$

素因数の和:981284

約数の個数: 20

約数和(自身を含む): 182516592

約数和(自身を除く): 104014912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 981271, 1962542, 3925084, 4906355, 7850168, 9812710, 15700336, 19625420, 39250840, 78501680]

約数ペア:

[(1, 78501680), (2, 39250840), (4, 19625420), (5, 15700336), (8, 9812710), (10, 7850168), (16, 4906355), (20, 3925084), (40, 1962542), (80, 981271)]