20989584

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{631}}^1$

素因数の和:666

約数の個数: 160

約数和(自身を含む): 75233280

約数和(自身を除く): 54243696

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 27, 28, 33, 36, 42, 44, 48, 54, 56, 63, 66, 72, 77, 84, 88, 99, 108, 112, 126, 132, 144, 154, 168, 176, 189, 198, 216, 231, 252, 264, 297, 308, 336, 378, 396, 432, 462, 504, 528, 594, 616, 631, 693, 756, 792, 924, 1008, 1188, 1232, 1262, 1386, 1512, 1584, 1848, 1893, 2079, 2376, 2524, 2772, 3024, 3696, 3786, 4158, 4417, 4752, 5048, 5544, 5679, 6941, 7572, 8316, 8834, 10096, 11088, 11358, 13251, 13882, 15144, 16632, 17037, 17668, 20823, 22716, 26502, 27764, 30288, 33264, 34074, 35336, 39753, 41646, 45432, 48587, 53004, 55528, 62469, 68148, 70672, 79506, 83292, 90864, 97174, 106008, 111056, 119259, 124938, 136296, 145761, 159012, 166584, 187407, 194348, 212016, 238518, 249876, 272592, 291522, 318024, 333168, 374814, 388696, 437283, 477036, 499752, 583044, 636048, 749628, 777392, 874566, 954072, 999504, 1166088, 1311849, 1499256, 1749132, 1908144, 2332176, 2623698, 2998512, 3498264, 5247396, 6996528, 10494792, 20989584]

約数ペア:

[(1, 20989584), (2, 10494792), (3, 6996528), (4, 5247396), (6, 3498264), (7, 2998512), (8, 2623698), (9, 2332176), (11, 1908144), (12, 1749132), (14, 1499256), (16, 1311849), (18, 1166088), (21, 999504), (22, 954072), (24, 874566), (27, 777392), (28, 749628), (33, 636048), (36, 583044), (42, 499752), (44, 477036), (48, 437283), (54, 388696), (56, 374814), (63, 333168), (66, 318024), (72, 291522), (77, 272592), (84, 249876), (88, 238518), (99, 212016), (108, 194348), (112, 187407), (126, 166584), (132, 159012), (144, 145761), (154, 136296), (168, 124938), (176, 119259), (189, 111056), (198, 106008), (216, 97174), (231, 90864), (252, 83292), (264, 79506), (297, 70672), (308, 68148), (336, 62469), (378, 55528), (396, 53004), (432, 48587), (462, 45432), (504, 41646), (528, 39753), (594, 35336), (616, 34074), (631, 33264), (693, 30288), (756, 27764), (792, 26502), (924, 22716), (1008, 20823), (1188, 17668), (1232, 17037), (1262, 16632), (1386, 15144), (1512, 13882), (1584, 13251), (1848, 11358), (1893, 11088), (2079, 10096), (2376, 8834), (2524, 8316), (2772, 7572), (3024, 6941), (3696, 5679), (3786, 5544), (4158, 5048), (4417, 4752)]