21164528

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:486

約数の個数: 80

約数和(自身を含む): 52496640

約数和(自身を除く): 31332112

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 41, 44, 56, 77, 82, 88, 112, 154, 164, 176, 287, 308, 328, 419, 451, 574, 616, 656, 838, 902, 1148, 1232, 1676, 1804, 2296, 2933, 3157, 3352, 3608, 4592, 4609, 5866, 6314, 6704, 7216, 9218, 11732, 12628, 17179, 18436, 23464, 25256, 32263, 34358, 36872, 46928, 50512, 64526, 68716, 73744, 120253, 129052, 137432, 188969, 240506, 258104, 274864, 377938, 481012, 516208, 755876, 962024, 1322783, 1511752, 1924048, 2645566, 3023504, 5291132, 10582264, 21164528]

約数ペア:

[(1, 21164528), (2, 10582264), (4, 5291132), (7, 3023504), (8, 2645566), (11, 1924048), (14, 1511752), (16, 1322783), (22, 962024), (28, 755876), (41, 516208), (44, 481012), (56, 377938), (77, 274864), (82, 258104), (88, 240506), (112, 188969), (154, 137432), (164, 129052), (176, 120253), (287, 73744), (308, 68716), (328, 64526), (419, 50512), (451, 46928), (574, 36872), (616, 34358), (656, 32263), (838, 25256), (902, 23464), (1148, 18436), (1232, 17179), (1676, 12628), (1804, 11732), (2296, 9218), (2933, 7216), (3157, 6704), (3352, 6314), (3608, 5866), (4592, 4609)]