21051056

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101207}}^1$

素因数の和:101228

約数の個数: 20

約数和(自身を含む): 43924272

約数和(自身を除く): 22873216

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101207, 202414, 404828, 809656, 1315691, 1619312, 2631382, 5262764, 10525528, 21051056]

約数ペア:

[(1, 21051056), (2, 10525528), (4, 5262764), (8, 2631382), (13, 1619312), (16, 1315691), (26, 809656), (52, 404828), (104, 202414), (208, 101207)]