21330928

素因数分解:

$2^4\times {\mathrm{971}}^1\times {\mathrm{1373}}^1$

素因数の和:2352

約数の個数: 20

約数和(自身を含む): 41401368

約数和(自身を除く): 20070440

約数列:

[1, 2, 4, 8, 16, 971, 1373, 1942, 2746, 3884, 5492, 7768, 10984, 15536, 21968, 1333183, 2666366, 5332732, 10665464, 21330928]

約数ペア:

[(1, 21330928), (2, 10665464), (4, 5332732), (8, 2666366), (16, 1333183), (971, 21968), (1373, 15536), (1942, 10984), (2746, 7768), (3884, 5492)]