21050246

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{157}}^2$

素因数の和:384

約数の個数: 24

約数和(自身を含む): 36912816

約数和(自身を除く): 15862570

約数列:

[1, 2, 7, 14, 61, 122, 157, 314, 427, 854, 1099, 2198, 9577, 19154, 24649, 49298, 67039, 134078, 172543, 345086, 1503589, 3007178, 10525123, 21050246]

約数ペア:

[(1, 21050246), (2, 10525123), (7, 3007178), (14, 1503589), (61, 345086), (122, 172543), (157, 134078), (314, 67039), (427, 49298), (854, 24649), (1099, 19154), (2198, 9577)]