20130975

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:329

約数の個数: 72

約数和(自身を含む): 40332240

約数和(自身を除く): 20201265

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 45, 51, 57, 75, 85, 95, 153, 171, 225, 255, 277, 285, 323, 425, 475, 765, 831, 855, 969, 1275, 1385, 1425, 1615, 2493, 2907, 3825, 4155, 4275, 4709, 4845, 5263, 6925, 8075, 12465, 14127, 14535, 15789, 20775, 23545, 24225, 26315, 42381, 47367, 62325, 70635, 72675, 78945, 89471, 117725, 131575, 211905, 236835, 268413, 353175, 394725, 447355, 805239, 1059525, 1184175, 1342065, 2236775, 4026195, 6710325, 20130975]

約数ペア:

[(1, 20130975), (3, 6710325), (5, 4026195), (9, 2236775), (15, 1342065), (17, 1184175), (19, 1059525), (25, 805239), (45, 447355), (51, 394725), (57, 353175), (75, 268413), (85, 236835), (95, 211905), (153, 131575), (171, 117725), (225, 89471), (255, 78945), (277, 72675), (285, 70635), (323, 62325), (425, 47367), (475, 42381), (765, 26315), (831, 24225), (855, 23545), (969, 20775), (1275, 15789), (1385, 14535), (1425, 14127), (1615, 12465), (2493, 8075), (2907, 6925), (3825, 5263), (4155, 4845), (4275, 4709)]