20804948432

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{550279}}^1$

素因数の和:550443

約数の個数: 40

約数和(自身を含む): 42987873600

約数和(自身を除く): 22182925168

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 139, 272, 278, 556, 1112, 2224, 2363, 4726, 9452, 18904, 37808, 550279, 1100558, 2201116, 4402232, 8804464, 9354743, 18709486, 37418972, 74837944, 76488781, 149675888, 152977562, 305955124, 611910248, 1223820496, 1300309277, 2600618554, 5201237108, 10402474216, 20804948432]

約数ペア:

[(1, 20804948432), (2, 10402474216), (4, 5201237108), (8, 2600618554), (16, 1300309277), (17, 1223820496), (34, 611910248), (68, 305955124), (136, 152977562), (139, 149675888), (272, 76488781), (278, 74837944), (556, 37418972), (1112, 18709486), (2224, 9354743), (2363, 8804464), (4726, 4402232), (9452, 2201116), (18904, 1100558), (37808, 550279)]