21055240

素因数分解:

$2^3\times 5^1\times {\mathrm{526381}}^1$

素因数の和:526392

約数の個数: 16

約数和(自身を含む): 47374380

約数和(自身を除く): 26319140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526381, 1052762, 2105524, 2631905, 4211048, 5263810, 10527620, 21055240]

約数ペア:

[(1, 21055240), (2, 10527620), (4, 5263810), (5, 4211048), (8, 2631905), (10, 2105524), (20, 1052762), (40, 526381)]