21042516

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:309

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 37018284

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 23, 29, 33, 44, 46, 58, 66, 69, 87, 92, 116, 132, 138, 174, 239, 253, 276, 319, 348, 478, 506, 638, 667, 717, 759, 956, 957, 1012, 1276, 1334, 1434, 1518, 1914, 2001, 2629, 2668, 2868, 3036, 3828, 4002, 5258, 5497, 6931, 7337, 7887, 8004, 10516, 10994, 13862, 14674, 15774, 16491, 20793, 21988, 22011, 27724, 29348, 31548, 32982, 41586, 44022, 60467, 65964, 76241, 83172, 88044, 120934, 152482, 159413, 181401, 228723, 241868, 304964, 318826, 362802, 457446, 478239, 637652, 725604, 914892, 956478, 1753543, 1912956, 3507086, 5260629, 7014172, 10521258, 21042516]

約数ペア:

[(1, 21042516), (2, 10521258), (3, 7014172), (4, 5260629), (6, 3507086), (11, 1912956), (12, 1753543), (22, 956478), (23, 914892), (29, 725604), (33, 637652), (44, 478239), (46, 457446), (58, 362802), (66, 318826), (69, 304964), (87, 241868), (92, 228723), (116, 181401), (132, 159413), (138, 152482), (174, 120934), (239, 88044), (253, 83172), (276, 76241), (319, 65964), (348, 60467), (478, 44022), (506, 41586), (638, 32982), (667, 31548), (717, 29348), (759, 27724), (956, 22011), (957, 21988), (1012, 20793), (1276, 16491), (1334, 15774), (1434, 14674), (1518, 13862), (1914, 10994), (2001, 10516), (2629, 8004), (2668, 7887), (2868, 7337), (3036, 6931), (3828, 5497), (4002, 5258)]