20403664

素因数分解:

$2^4\times {\mathrm{1021}}^1\times {\mathrm{1249}}^1$

素因数の和:2278

約数の個数: 20

約数和(自身を含む): 39602500

約数和(自身を除く): 19198836

約数列:

[1, 2, 4, 8, 16, 1021, 1249, 2042, 2498, 4084, 4996, 8168, 9992, 16336, 19984, 1275229, 2550458, 5100916, 10201832, 20403664]

約数ペア:

[(1, 20403664), (2, 10201832), (4, 5100916), (8, 2550458), (16, 1275229), (1021, 19984), (1249, 16336), (2042, 9992), (2498, 8168), (4084, 4996)]