81840635

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^2\times {\mathrm{191}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 106023168

約数和(自身を除く): 24182533

約数列:

[1, 5, 17, 71, 85, 191, 355, 955, 1207, 3247, 5041, 6035, 13561, 16235, 25205, 67805, 85697, 230537, 428485, 962831, 1152685, 4814155, 16368127, 81840635]

約数ペア:

[(1, 81840635), (5, 16368127), (17, 4814155), (71, 1152685), (85, 962831), (191, 428485), (355, 230537), (955, 85697), (1207, 67805), (3247, 25205), (5041, 16235), (6035, 13561)]