81634690

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199109}}^1$

素因数の和:199157

約数の個数: 16

約数和(自身を含む): 150527160

約数和(自身を除く): 68892470

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 199109, 398218, 995545, 1991090, 8163469, 16326938, 40817345, 81634690]

約数ペア:

[(1, 81634690), (2, 40817345), (5, 16326938), (10, 8163469), (41, 1991090), (82, 995545), (205, 398218), (410, 199109)]