20986064

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:168

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 26153776

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 47, 59, 86, 88, 94, 118, 172, 176, 188, 236, 344, 376, 472, 473, 517, 649, 688, 752, 944, 946, 1034, 1298, 1892, 2021, 2068, 2537, 2596, 2773, 3784, 4042, 4136, 5074, 5192, 5546, 7568, 8084, 8272, 10148, 10384, 11092, 16168, 20296, 22184, 22231, 27907, 30503, 32336, 40592, 44368, 44462, 55814, 61006, 88924, 111628, 119239, 122012, 177848, 223256, 238478, 244024, 355696, 446512, 476956, 488048, 953912, 1311629, 1907824, 2623258, 5246516, 10493032, 20986064]

約数ペア:

[(1, 20986064), (2, 10493032), (4, 5246516), (8, 2623258), (11, 1907824), (16, 1311629), (22, 953912), (43, 488048), (44, 476956), (47, 446512), (59, 355696), (86, 244024), (88, 238478), (94, 223256), (118, 177848), (172, 122012), (176, 119239), (188, 111628), (236, 88924), (344, 61006), (376, 55814), (472, 44462), (473, 44368), (517, 40592), (649, 32336), (688, 30503), (752, 27907), (944, 22231), (946, 22184), (1034, 20296), (1298, 16168), (1892, 11092), (2021, 10384), (2068, 10148), (2537, 8272), (2596, 8084), (2773, 7568), (3784, 5546), (4042, 5192), (4136, 5074)]