21341072

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31019}}^1$

素因数の和:31070

約数の個数: 20

約数和(自身を含む): 42311280

約数和(自身を除く): 20970208

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31019, 62038, 124076, 248152, 496304, 1333817, 2667634, 5335268, 10670536, 21341072]

約数ペア:

[(1, 21341072), (2, 10670536), (4, 5335268), (8, 2667634), (16, 1333817), (43, 496304), (86, 248152), (172, 124076), (344, 62038), (688, 31019)]