79767920

素因数分解:

$2^4\times 5^1\times {\mathrm{997099}}^1$

素因数の和:997112

約数の個数: 20

約数和(自身を含む): 185460600

約数和(自身を除く): 105692680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997099, 1994198, 3988396, 4985495, 7976792, 9970990, 15953584, 19941980, 39883960, 79767920]

約数ペア:

[(1, 79767920), (2, 39883960), (4, 19941980), (5, 15953584), (8, 9970990), (10, 7976792), (16, 4985495), (20, 3988396), (40, 1994198), (80, 997099)]