21250768

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{367}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 52568064

約数和(自身を除く): 31317296

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 47, 56, 77, 88, 94, 112, 154, 176, 188, 308, 329, 367, 376, 517, 616, 658, 734, 752, 1034, 1232, 1316, 1468, 2068, 2569, 2632, 2936, 3619, 4037, 4136, 5138, 5264, 5872, 7238, 8074, 8272, 10276, 14476, 16148, 17249, 20552, 28259, 28952, 32296, 34498, 41104, 56518, 57904, 64592, 68996, 113036, 120743, 137992, 189739, 226072, 241486, 275984, 379478, 452144, 482972, 758956, 965944, 1328173, 1517912, 1931888, 2656346, 3035824, 5312692, 10625384, 21250768]

約数ペア:

[(1, 21250768), (2, 10625384), (4, 5312692), (7, 3035824), (8, 2656346), (11, 1931888), (14, 1517912), (16, 1328173), (22, 965944), (28, 758956), (44, 482972), (47, 452144), (56, 379478), (77, 275984), (88, 241486), (94, 226072), (112, 189739), (154, 137992), (176, 120743), (188, 113036), (308, 68996), (329, 64592), (367, 57904), (376, 56518), (517, 41104), (616, 34498), (658, 32296), (734, 28952), (752, 28259), (1034, 20552), (1232, 17249), (1316, 16148), (1468, 14476), (2068, 10276), (2569, 8272), (2632, 8074), (2936, 7238), (3619, 5872), (4037, 5264), (4136, 5138)]