20699379

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:344

約数の個数: 36

約数和(自身を含む): 33046416

約数和(自身を除く): 12347037

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 277, 361, 437, 831, 1083, 1311, 2493, 3249, 3933, 5263, 6371, 8303, 15789, 19113, 24909, 47367, 57339, 74727, 99997, 121049, 299991, 363147, 899973, 1089441, 2299931, 6899793, 20699379]

約数ペア:

[(1, 20699379), (3, 6899793), (9, 2299931), (19, 1089441), (23, 899973), (57, 363147), (69, 299991), (171, 121049), (207, 99997), (277, 74727), (361, 57339), (437, 47367), (831, 24909), (1083, 19113), (1311, 15789), (2493, 8303), (3249, 6371), (3933, 5263)]