21790384

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{769}}^1$

素因数の和:818

約数の個数: 80

約数和(自身を含む): 54996480

約数和(自身を除く): 33206096

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 44, 46, 56, 77, 88, 92, 112, 154, 161, 176, 184, 253, 308, 322, 368, 506, 616, 644, 769, 1012, 1232, 1288, 1538, 1771, 2024, 2576, 3076, 3542, 4048, 5383, 6152, 7084, 8459, 10766, 12304, 14168, 16918, 17687, 21532, 28336, 33836, 35374, 43064, 59213, 67672, 70748, 86128, 118426, 123809, 135344, 141496, 194557, 236852, 247618, 282992, 389114, 473704, 495236, 778228, 947408, 990472, 1361899, 1556456, 1980944, 2723798, 3112912, 5447596, 10895192, 21790384]

約数ペア:

[(1, 21790384), (2, 10895192), (4, 5447596), (7, 3112912), (8, 2723798), (11, 1980944), (14, 1556456), (16, 1361899), (22, 990472), (23, 947408), (28, 778228), (44, 495236), (46, 473704), (56, 389114), (77, 282992), (88, 247618), (92, 236852), (112, 194557), (154, 141496), (161, 135344), (176, 123809), (184, 118426), (253, 86128), (308, 70748), (322, 67672), (368, 59213), (506, 43064), (616, 35374), (644, 33836), (769, 28336), (1012, 21532), (1232, 17687), (1288, 16918), (1538, 14168), (1771, 12304), (2024, 10766), (2576, 8459), (3076, 7084), (3542, 6152), (4048, 5383)]