21189616

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:422

約数の個数: 80

約数和(自身を含む): 51425280

約数和(自身を除く): 30235664

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 31, 34, 56, 62, 68, 112, 119, 124, 136, 217, 238, 248, 272, 359, 434, 476, 496, 527, 718, 868, 952, 1054, 1436, 1736, 1904, 2108, 2513, 2872, 3472, 3689, 4216, 5026, 5744, 6103, 7378, 8432, 10052, 11129, 12206, 14756, 20104, 22258, 24412, 29512, 40208, 42721, 44516, 48824, 59024, 77903, 85442, 89032, 97648, 155806, 170884, 178064, 189193, 311612, 341768, 378386, 623224, 683536, 756772, 1246448, 1324351, 1513544, 2648702, 3027088, 5297404, 10594808, 21189616]

約数ペア:

[(1, 21189616), (2, 10594808), (4, 5297404), (7, 3027088), (8, 2648702), (14, 1513544), (16, 1324351), (17, 1246448), (28, 756772), (31, 683536), (34, 623224), (56, 378386), (62, 341768), (68, 311612), (112, 189193), (119, 178064), (124, 170884), (136, 155806), (217, 97648), (238, 89032), (248, 85442), (272, 77903), (359, 59024), (434, 48824), (476, 44516), (496, 42721), (527, 40208), (718, 29512), (868, 24412), (952, 22258), (1054, 20104), (1436, 14756), (1736, 12206), (1904, 11129), (2108, 10052), (2513, 8432), (2872, 7378), (3472, 6103), (3689, 5744), (4216, 5026)]