20186565

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 40144896

約数和(自身を除く): 19958331

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 43, 51, 85, 105, 119, 129, 215, 255, 263, 301, 357, 595, 645, 731, 789, 903, 1315, 1505, 1785, 1841, 2193, 3655, 3945, 4471, 4515, 5117, 5523, 9205, 10965, 11309, 13413, 15351, 22355, 25585, 27615, 31297, 33927, 56545, 67065, 76755, 79163, 93891, 156485, 169635, 192253, 237489, 395815, 469455, 576759, 961265, 1187445, 1345771, 2883795, 4037313, 6728855, 20186565]

約数ペア:

[(1, 20186565), (3, 6728855), (5, 4037313), (7, 2883795), (15, 1345771), (17, 1187445), (21, 961265), (35, 576759), (43, 469455), (51, 395815), (85, 237489), (105, 192253), (119, 169635), (129, 156485), (215, 93891), (255, 79163), (263, 76755), (301, 67065), (357, 56545), (595, 33927), (645, 31297), (731, 27615), (789, 25585), (903, 22355), (1315, 15351), (1505, 13413), (1785, 11309), (1841, 10965), (2193, 9205), (3655, 5523), (3945, 5117), (4471, 4515)]