21312753

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 35665920

約数和(自身を除く): 14353167

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 257, 359, 771, 1077, 1799, 2513, 2827, 3949, 5397, 7539, 8481, 11847, 19789, 27643, 59367, 82929, 92263, 276789, 645841, 1014893, 1937523, 3044679, 7104251, 21312753]

約数ペア:

[(1, 21312753), (3, 7104251), (7, 3044679), (11, 1937523), (21, 1014893), (33, 645841), (77, 276789), (231, 92263), (257, 82929), (359, 59367), (771, 27643), (1077, 19789), (1799, 11847), (2513, 8481), (2827, 7539), (3949, 5397)]