20449737

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1283}}^1$

素因数の和:1330

約数の個数: 48

約数和(自身を含む): 38458368

約数和(自身を除く): 18008631

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 161, 207, 231, 253, 483, 693, 759, 1283, 1449, 1771, 2277, 3849, 5313, 8981, 11547, 14113, 15939, 26943, 29509, 42339, 80829, 88527, 98791, 127017, 206563, 265581, 296373, 324599, 619689, 889119, 973797, 1859067, 2272193, 2921391, 6816579, 20449737]

約数ペア:

[(1, 20449737), (3, 6816579), (7, 2921391), (9, 2272193), (11, 1859067), (21, 973797), (23, 889119), (33, 619689), (63, 324599), (69, 296373), (77, 265581), (99, 206563), (161, 127017), (207, 98791), (231, 88527), (253, 80829), (483, 42339), (693, 29509), (759, 26943), (1283, 15939), (1449, 14113), (1771, 11547), (2277, 8981), (3849, 5313)]