20626749

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:119

約数の個数: 72

約数和(自身を含む): 37180416

約数和(自身を除く): 16553667

約数列:

[1, 3, 9, 11, 13, 31, 33, 39, 47, 93, 99, 117, 121, 141, 143, 279, 341, 363, 403, 423, 429, 517, 611, 1023, 1089, 1209, 1287, 1457, 1551, 1573, 1833, 3069, 3627, 3751, 4371, 4433, 4653, 4719, 5499, 5687, 6721, 11253, 13113, 13299, 14157, 16027, 17061, 18941, 20163, 33759, 39897, 48081, 48763, 51183, 56823, 60489, 73931, 144243, 146289, 170469, 176297, 208351, 221793, 438867, 528891, 625053, 665379, 1586673, 1875159, 2291861, 6875583, 20626749]

約数ペア:

[(1, 20626749), (3, 6875583), (9, 2291861), (11, 1875159), (13, 1586673), (31, 665379), (33, 625053), (39, 528891), (47, 438867), (93, 221793), (99, 208351), (117, 176297), (121, 170469), (141, 146289), (143, 144243), (279, 73931), (341, 60489), (363, 56823), (403, 51183), (423, 48763), (429, 48081), (517, 39897), (611, 33759), (1023, 20163), (1089, 18941), (1209, 17061), (1287, 16027), (1457, 14157), (1551, 13299), (1573, 13113), (1833, 11253), (3069, 6721), (3627, 5687), (3751, 5499), (4371, 4719), (4433, 4653)]