19886416

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1097}}^1$

素因数の和:1219

約数の個数: 40

約数和(自身を含む): 42479424

約数和(自身を除く): 22593008

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 103, 176, 206, 412, 824, 1097, 1133, 1648, 2194, 2266, 4388, 4532, 8776, 9064, 12067, 17552, 18128, 24134, 48268, 96536, 112991, 193072, 225982, 451964, 903928, 1242901, 1807856, 2485802, 4971604, 9943208, 19886416]

約数ペア:

[(1, 19886416), (2, 9943208), (4, 4971604), (8, 2485802), (11, 1807856), (16, 1242901), (22, 903928), (44, 451964), (88, 225982), (103, 193072), (176, 112991), (206, 96536), (412, 48268), (824, 24134), (1097, 18128), (1133, 17552), (1648, 12067), (2194, 9064), (2266, 8776), (4388, 4532)]