28013739

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:140

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 18434901

約数列:

[1, 3, 13, 17, 29, 31, 39, 47, 51, 87, 93, 141, 221, 377, 403, 493, 527, 611, 663, 799, 899, 1131, 1209, 1363, 1457, 1479, 1581, 1833, 2397, 2697, 4089, 4371, 6409, 6851, 10387, 11687, 15283, 17719, 18941, 19227, 20553, 23171, 24769, 31161, 35061, 42253, 45849, 53157, 56823, 69513, 74307, 126759, 198679, 301223, 321997, 549289, 596037, 718301, 903669, 965991, 1647867, 2154903, 9337913, 28013739]

約数ペア:

[(1, 28013739), (3, 9337913), (13, 2154903), (17, 1647867), (29, 965991), (31, 903669), (39, 718301), (47, 596037), (51, 549289), (87, 321997), (93, 301223), (141, 198679), (221, 126759), (377, 74307), (403, 69513), (493, 56823), (527, 53157), (611, 45849), (663, 42253), (799, 35061), (899, 31161), (1131, 24769), (1209, 23171), (1363, 20553), (1457, 19227), (1479, 18941), (1581, 17719), (1833, 15283), (2397, 11687), (2697, 10387), (4089, 6851), (4371, 6409)]