21268496

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78193}}^1$

素因数の和:78218

約数の個数: 20

約数和(自身を含む): 43632252

約数和(自身を除く): 22363756

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78193, 156386, 312772, 625544, 1251088, 1329281, 2658562, 5317124, 10634248, 21268496]

約数ペア:

[(1, 21268496), (2, 10634248), (4, 5317124), (8, 2658562), (16, 1329281), (17, 1251088), (34, 625544), (68, 312772), (136, 156386), (272, 78193)]