20994764

素因数分解:

$2^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{2851}}^1$

素因数の和:3125

約数の個数: 24

約数和(自身を含む): 42163968

約数和(自身を除く): 21169204

約数列:

[1, 2, 4, 7, 14, 28, 263, 526, 1052, 1841, 2851, 3682, 5702, 7364, 11404, 19957, 39914, 79828, 749813, 1499626, 2999252, 5248691, 10497382, 20994764]

約数ペア:

[(1, 20994764), (2, 10497382), (4, 5248691), (7, 2999252), (14, 1499626), (28, 749813), (263, 79828), (526, 39914), (1052, 19957), (1841, 11404), (2851, 7364), (3682, 5702)]