20767761

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19391}}^1$

素因数の和:19421

約数の個数: 24

約数和(自身を含む): 36301824

約数和(自身を除く): 15534063

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19391, 58173, 135737, 174519, 329647, 407211, 988941, 1221633, 2307529, 2966823, 6922587, 20767761]

約数ペア:

[(1, 20767761), (3, 6922587), (7, 2966823), (9, 2307529), (17, 1221633), (21, 988941), (51, 407211), (63, 329647), (119, 174519), (153, 135737), (357, 58173), (1071, 19391)]