21285808

素因数分解:

$2^4\times {\mathrm{1021}}^1\times {\mathrm{1303}}^1$

素因数の和:2332

約数の個数: 20

約数和(自身を含む): 41313328

約数和(自身を除く): 20027520

約数列:

[1, 2, 4, 8, 16, 1021, 1303, 2042, 2606, 4084, 5212, 8168, 10424, 16336, 20848, 1330363, 2660726, 5321452, 10642904, 21285808]

約数ペア:

[(1, 21285808), (2, 10642904), (4, 5321452), (8, 2660726), (16, 1330363), (1021, 20848), (1303, 16336), (2042, 10424), (2606, 8168), (4084, 5212)]