21055192

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1951}}^1$

素因数の和:2047

約数の個数: 32

約数和(自身を含む): 42163200

約数和(自身を除く): 21108008

約数列:

[1, 2, 4, 8, 19, 38, 71, 76, 142, 152, 284, 568, 1349, 1951, 2698, 3902, 5396, 7804, 10792, 15608, 37069, 74138, 138521, 148276, 277042, 296552, 554084, 1108168, 2631899, 5263798, 10527596, 21055192]

約数ペア:

[(1, 21055192), (2, 10527596), (4, 5263798), (8, 2631899), (19, 1108168), (38, 554084), (71, 296552), (76, 277042), (142, 148276), (152, 138521), (284, 74138), (568, 37069), (1349, 15608), (1951, 10792), (2698, 7804), (3902, 5396)]