221330984

素因数分解:

$2^3\times 7^1\times {\mathrm{199}}^1\times {\mathrm{19861}}^1$

素因数の和:20073

約数の個数: 32

約数和(自身を含む): 476688000

約数和(自身を除く): 255357016

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 199, 398, 796, 1393, 1592, 2786, 5572, 11144, 19861, 39722, 79444, 139027, 158888, 278054, 556108, 1112216, 3952339, 7904678, 15809356, 27666373, 31618712, 55332746, 110665492, 221330984]

約数ペア:

[(1, 221330984), (2, 110665492), (4, 55332746), (7, 31618712), (8, 27666373), (14, 15809356), (28, 7904678), (56, 3952339), (199, 1112216), (398, 556108), (796, 278054), (1393, 158888), (1592, 139027), (2786, 79444), (5572, 39722), (11144, 19861)]