18921357

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 37078272

約数和(自身を除く): 18156915

約数列:

[1, 3, 7, 9, 13, 17, 21, 27, 39, 51, 63, 81, 91, 117, 119, 151, 153, 189, 221, 273, 351, 357, 453, 459, 567, 663, 819, 1053, 1057, 1071, 1359, 1377, 1547, 1963, 1989, 2457, 2567, 3171, 3213, 4077, 4641, 5889, 5967, 7371, 7701, 9513, 9639, 12231, 13741, 13923, 17667, 17901, 17969, 23103, 28539, 33371, 41223, 41769, 53001, 53907, 69309, 85617, 100113, 123669, 125307, 159003, 161721, 207927, 233597, 300339, 371007, 485163, 700791, 901017, 1113021, 1455489, 2102373, 2703051, 6307119, 18921357]

約数ペア:

[(1, 18921357), (3, 6307119), (7, 2703051), (9, 2102373), (13, 1455489), (17, 1113021), (21, 901017), (27, 700791), (39, 485163), (51, 371007), (63, 300339), (81, 233597), (91, 207927), (117, 161721), (119, 159003), (151, 125307), (153, 123669), (189, 100113), (221, 85617), (273, 69309), (351, 53907), (357, 53001), (453, 41769), (459, 41223), (567, 33371), (663, 28539), (819, 23103), (1053, 17969), (1057, 17901), (1071, 17667), (1359, 13923), (1377, 13741), (1547, 12231), (1963, 9639), (1989, 9513), (2457, 7701), (2567, 7371), (3171, 5967), (3213, 5889), (4077, 4641)]