21180705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{263}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 21397215

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 59, 65, 91, 105, 177, 195, 263, 273, 295, 413, 455, 767, 789, 885, 1239, 1315, 1365, 1841, 2065, 2301, 3419, 3835, 3945, 5369, 5523, 6195, 9205, 10257, 11505, 15517, 16107, 17095, 23933, 26845, 27615, 46551, 51285, 71799, 77585, 80535, 108619, 119665, 201721, 232755, 325857, 358995, 543095, 605163, 1008605, 1412047, 1629285, 3025815, 4236141, 7060235, 21180705]

約数ペア:

[(1, 21180705), (3, 7060235), (5, 4236141), (7, 3025815), (13, 1629285), (15, 1412047), (21, 1008605), (35, 605163), (39, 543095), (59, 358995), (65, 325857), (91, 232755), (105, 201721), (177, 119665), (195, 108619), (263, 80535), (273, 77585), (295, 71799), (413, 51285), (455, 46551), (767, 27615), (789, 26845), (885, 23933), (1239, 17095), (1315, 16107), (1365, 15517), (1841, 11505), (2065, 10257), (2301, 9205), (3419, 6195), (3835, 5523), (3945, 5369)]