21108262

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{10847}}^1$

素因数の和:10995

約数の個数: 16

約数和(自身を含む): 36449280

約数和(自身を除く): 15341018

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 10847, 21694, 75929, 151858, 1507733, 3015466, 10554131, 21108262]

約数ペア:

[(1, 21108262), (2, 10554131), (7, 3015466), (14, 1507733), (139, 151858), (278, 75929), (973, 21694), (1946, 10847)]