20685849

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{1187}}^1$

素因数の和:1384

約数の個数: 16

約数和(自身を含む): 28531008

約数和(自身を除く): 7845159

約数列:

[1, 3, 37, 111, 157, 471, 1187, 3561, 5809, 17427, 43919, 131757, 186359, 559077, 6895283, 20685849]

約数ペア:

[(1, 20685849), (3, 6895283), (37, 559077), (111, 186359), (157, 131757), (471, 43919), (1187, 17427), (3561, 5809)]