81909905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{6863}}^1$

素因数の和:6917

約数の個数: 32

約数和(自身を含む): 126517248

約数和(自身を除く): 44607343

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 2387, 6863, 11935, 34315, 48041, 75493, 212753, 240205, 377465, 528451, 1063765, 1489271, 2340283, 2642255, 7446355, 11701415, 16381981, 81909905]

約数ペア:

[(1, 81909905), (5, 16381981), (7, 11701415), (11, 7446355), (31, 2642255), (35, 2340283), (55, 1489271), (77, 1063765), (155, 528451), (217, 377465), (341, 240205), (385, 212753), (1085, 75493), (1705, 48041), (2387, 34315), (6863, 11935)]