199487480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{160877}}^1$

素因数の和:160919

約数の個数: 32

約数和(自身を含む): 463328640

約数和(自身を除く): 263841160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 160877, 321754, 643508, 804385, 1287016, 1608770, 3217540, 4987187, 6435080, 9974374, 19948748, 24935935, 39897496, 49871870, 99743740, 199487480]

約数ペア:

[(1, 199487480), (2, 99743740), (4, 49871870), (5, 39897496), (8, 24935935), (10, 19948748), (20, 9974374), (31, 6435080), (40, 4987187), (62, 3217540), (124, 1608770), (155, 1287016), (248, 804385), (310, 643508), (620, 321754), (1240, 160877)]