21020208

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{971}}^1$

素因数の和:1034

約数の個数: 80

約数和(自身を含む): 60746112

約数和(自身を除く): 39725904

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 41, 44, 48, 66, 82, 88, 123, 132, 164, 176, 246, 264, 328, 451, 492, 528, 656, 902, 971, 984, 1353, 1804, 1942, 1968, 2706, 2913, 3608, 3884, 5412, 5826, 7216, 7768, 10681, 10824, 11652, 15536, 21362, 21648, 23304, 32043, 39811, 42724, 46608, 64086, 79622, 85448, 119433, 128172, 159244, 170896, 238866, 256344, 318488, 437921, 477732, 512688, 636976, 875842, 955464, 1313763, 1751684, 1910928, 2627526, 3503368, 5255052, 7006736, 10510104, 21020208]

約数ペア:

[(1, 21020208), (2, 10510104), (3, 7006736), (4, 5255052), (6, 3503368), (8, 2627526), (11, 1910928), (12, 1751684), (16, 1313763), (22, 955464), (24, 875842), (33, 636976), (41, 512688), (44, 477732), (48, 437921), (66, 318488), (82, 256344), (88, 238866), (123, 170896), (132, 159244), (164, 128172), (176, 119433), (246, 85448), (264, 79622), (328, 64086), (451, 46608), (492, 42724), (528, 39811), (656, 32043), (902, 23304), (971, 21648), (984, 21362), (1353, 15536), (1804, 11652), (1942, 10824), (1968, 10681), (2706, 7768), (2913, 7216), (3608, 5826), (3884, 5412)]