21779056

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104707}}^1$

素因数の和:104728

約数の個数: 20

約数和(自身を含む): 45443272

約数和(自身を除く): 23664216

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104707, 209414, 418828, 837656, 1361191, 1675312, 2722382, 5444764, 10889528, 21779056]

約数ペア:

[(1, 21779056), (2, 10889528), (4, 5444764), (8, 2722382), (13, 1675312), (16, 1361191), (26, 837656), (52, 418828), (104, 209414), (208, 104707)]