21365982

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^2$

素因数の和:170

約数の個数: 72

約数和(自身を含む): 53113320

約数和(自身を除く): 31747338

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 29, 33, 58, 61, 66, 87, 99, 122, 174, 183, 198, 261, 319, 366, 522, 549, 638, 671, 957, 1098, 1342, 1769, 1914, 2013, 2871, 3538, 3721, 4026, 5307, 5742, 6039, 7442, 10614, 11163, 12078, 15921, 19459, 22326, 31842, 33489, 38918, 40931, 58377, 66978, 81862, 107909, 116754, 122793, 175131, 215818, 245586, 323727, 350262, 368379, 647454, 736758, 971181, 1186999, 1942362, 2373998, 3560997, 7121994, 10682991, 21365982]

約数ペア:

[(1, 21365982), (2, 10682991), (3, 7121994), (6, 3560997), (9, 2373998), (11, 1942362), (18, 1186999), (22, 971181), (29, 736758), (33, 647454), (58, 368379), (61, 350262), (66, 323727), (87, 245586), (99, 215818), (122, 175131), (174, 122793), (183, 116754), (198, 107909), (261, 81862), (319, 66978), (366, 58377), (522, 40931), (549, 38918), (638, 33489), (671, 31842), (957, 22326), (1098, 19459), (1342, 15921), (1769, 12078), (1914, 11163), (2013, 10614), (2871, 7442), (3538, 6039), (3721, 5742), (4026, 5307)]