21165676

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 22863764

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 103, 164, 179, 206, 287, 358, 412, 574, 716, 721, 1148, 1253, 1442, 2506, 2884, 4223, 5012, 7339, 8446, 14678, 16892, 18437, 29356, 29561, 36874, 51373, 59122, 73748, 102746, 118244, 129059, 205492, 258118, 516236, 755917, 1511834, 3023668, 5291419, 10582838, 21165676]

約数ペア:

[(1, 21165676), (2, 10582838), (4, 5291419), (7, 3023668), (14, 1511834), (28, 755917), (41, 516236), (82, 258118), (103, 205492), (164, 129059), (179, 118244), (206, 102746), (287, 73748), (358, 59122), (412, 51373), (574, 36874), (716, 29561), (721, 29356), (1148, 18437), (1253, 16892), (1442, 14678), (2506, 8446), (2884, 7339), (4223, 5012)]