21077872

素因数分解:

$2^4\times {\mathrm{263}}^1\times {\mathrm{5009}}^1$

素因数の和:5280

約数の個数: 20

約数和(自身を含む): 41001840

約数和(自身を除く): 19923968

約数列:

[1, 2, 4, 8, 16, 263, 526, 1052, 2104, 4208, 5009, 10018, 20036, 40072, 80144, 1317367, 2634734, 5269468, 10538936, 21077872]

約数ペア:

[(1, 21077872), (2, 10538936), (4, 5269468), (8, 2634734), (16, 1317367), (263, 80144), (526, 40072), (1052, 20036), (2104, 10018), (4208, 5009)]