21469938

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{709}}^1$

素因数の和:831

約数の個数: 48

約数和(自身を含む): 50506560

約数和(自身を除く): 29036622

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 103, 147, 206, 294, 309, 618, 709, 721, 1418, 1442, 2127, 2163, 4254, 4326, 4963, 5047, 9926, 10094, 14889, 15141, 29778, 30282, 34741, 69482, 73027, 104223, 146054, 208446, 219081, 438162, 511189, 1022378, 1533567, 3067134, 3578323, 7156646, 10734969, 21469938]

約数ペア:

[(1, 21469938), (2, 10734969), (3, 7156646), (6, 3578323), (7, 3067134), (14, 1533567), (21, 1022378), (42, 511189), (49, 438162), (98, 219081), (103, 208446), (147, 146054), (206, 104223), (294, 73027), (309, 69482), (618, 34741), (709, 30282), (721, 29778), (1418, 15141), (1442, 14889), (2127, 10094), (2163, 9926), (4254, 5047), (4326, 4963)]