20838207

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1787}}^1$

素因数の和:1839

約数の個数: 24

約数和(自身を含む): 31411584

約数和(自身を除く): 10573377

約数列:

[1, 3, 13, 23, 39, 69, 169, 299, 507, 897, 1787, 3887, 5361, 11661, 23231, 41101, 69693, 123303, 302003, 534313, 906009, 1602939, 6946069, 20838207]

約数ペア:

[(1, 20838207), (3, 6946069), (13, 1602939), (23, 906009), (39, 534313), (69, 302003), (169, 123303), (299, 69693), (507, 41101), (897, 23231), (1787, 11661), (3887, 5361)]