21228688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102061}}^1$

素因数の和:102082

約数の個数: 20

約数和(自身を含む): 44294908

約数和(自身を除く): 23066220

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102061, 204122, 408244, 816488, 1326793, 1632976, 2653586, 5307172, 10614344, 21228688]

約数ペア:

[(1, 21228688), (2, 10614344), (4, 5307172), (8, 2653586), (13, 1632976), (16, 1326793), (26, 816488), (52, 408244), (104, 204122), (208, 102061)]