20154519

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 36741120

約数和(自身を除く): 16586601

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 127, 229, 231, 381, 687, 693, 889, 1143, 1397, 1603, 2061, 2519, 2667, 4191, 4809, 7557, 8001, 9779, 12573, 14427, 17633, 22671, 29083, 29337, 52899, 87249, 88011, 158697, 203581, 261747, 319913, 610743, 959739, 1832229, 2239391, 2879217, 6718173, 20154519]

約数ペア:

[(1, 20154519), (3, 6718173), (7, 2879217), (9, 2239391), (11, 1832229), (21, 959739), (33, 610743), (63, 319913), (77, 261747), (99, 203581), (127, 158697), (229, 88011), (231, 87249), (381, 52899), (687, 29337), (693, 29083), (889, 22671), (1143, 17633), (1397, 14427), (1603, 12573), (2061, 9779), (2519, 8001), (2667, 7557), (4191, 4809)]