21380906

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1\times {\mathrm{421}}^1$

素因数の和:869

約数の個数: 16

約数和(自身を含む): 32713440

約数和(自身を除く): 11332534

約数列:

[1, 2, 67, 134, 379, 421, 758, 842, 25393, 28207, 50786, 56414, 159559, 319118, 10690453, 21380906]

約数ペア:

[(1, 21380906), (2, 10690453), (67, 319118), (134, 159559), (379, 56414), (421, 50786), (758, 28207), (842, 25393)]