20968706

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6857}}^1$

素因数の和:7009

約数の個数: 16

約数和(自身を含む): 34564320

約数和(自身を除く): 13595614

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6857, 13714, 75427, 150854, 953123, 1906246, 10484353, 20968706]

約数ペア:

[(1, 20968706), (2, 10484353), (11, 1906246), (22, 953123), (139, 150854), (278, 75427), (1529, 13714), (3058, 6857)]