21881188

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 46497024

約数和(自身を除く): 24615836

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 61, 92, 122, 161, 244, 322, 427, 557, 644, 854, 1114, 1403, 1708, 2228, 2806, 3899, 5612, 7798, 9821, 12811, 15596, 19642, 25622, 33977, 39284, 51244, 67954, 89677, 135908, 179354, 237839, 358708, 475678, 781471, 951356, 1562942, 3125884, 5470297, 10940594, 21881188]

約数ペア:

[(1, 21881188), (2, 10940594), (4, 5470297), (7, 3125884), (14, 1562942), (23, 951356), (28, 781471), (46, 475678), (61, 358708), (92, 237839), (122, 179354), (161, 135908), (244, 89677), (322, 67954), (427, 51244), (557, 39284), (644, 33977), (854, 25622), (1114, 19642), (1403, 15596), (1708, 12811), (2228, 9821), (2806, 7798), (3899, 5612)]