20784387

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:132

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 14052093

約数列:

[1, 3, 13, 17, 23, 29, 39, 47, 51, 69, 87, 141, 221, 299, 377, 391, 493, 611, 663, 667, 799, 897, 1081, 1131, 1173, 1363, 1479, 1833, 2001, 2397, 3243, 4089, 5083, 6409, 8671, 10387, 11339, 14053, 15249, 17719, 18377, 19227, 23171, 26013, 31161, 31349, 34017, 42159, 53157, 55131, 69513, 94047, 147407, 238901, 301223, 407537, 442221, 532933, 716703, 903669, 1222611, 1598799, 6928129, 20784387]

約数ペア:

[(1, 20784387), (3, 6928129), (13, 1598799), (17, 1222611), (23, 903669), (29, 716703), (39, 532933), (47, 442221), (51, 407537), (69, 301223), (87, 238901), (141, 147407), (221, 94047), (299, 69513), (377, 55131), (391, 53157), (493, 42159), (611, 34017), (663, 31349), (667, 31161), (799, 26013), (897, 23171), (1081, 19227), (1131, 18377), (1173, 17719), (1363, 15249), (1479, 14053), (1833, 11339), (2001, 10387), (2397, 8671), (3243, 6409), (4089, 5083)]