18720472

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1559}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 37440000

約数和(自身を除く): 18719528

約数列:

[1, 2, 4, 8, 19, 38, 76, 79, 152, 158, 316, 632, 1501, 1559, 3002, 3118, 6004, 6236, 12008, 12472, 29621, 59242, 118484, 123161, 236968, 246322, 492644, 985288, 2340059, 4680118, 9360236, 18720472]

約数ペア:

[(1, 18720472), (2, 9360236), (4, 4680118), (8, 2340059), (19, 985288), (38, 492644), (76, 246322), (79, 236968), (152, 123161), (158, 118484), (316, 59242), (632, 29621), (1501, 12472), (1559, 12008), (3002, 6236), (3118, 6004)]