21615056

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9719}}^1$

素因数の和:9866

約数の個数: 20

約数和(自身を含む): 42184800

約数和(自身を除く): 20569744

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9719, 19438, 38876, 77752, 155504, 1350941, 2701882, 5403764, 10807528, 21615056]

約数ペア:

[(1, 21615056), (2, 10807528), (4, 5403764), (8, 2701882), (16, 1350941), (139, 155504), (278, 77752), (556, 38876), (1112, 19438), (2224, 9719)]