21192255

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1373}}^1$

素因数の和:1405

約数の個数: 48

約数和(自身を含む): 42868800

約数和(自身を除く): 21676545

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1373, 1715, 2205, 3087, 4119, 5145, 6865, 9611, 12357, 15435, 20595, 28833, 48055, 61785, 67277, 86499, 144165, 201831, 336385, 432495, 470939, 605493, 1009155, 1412817, 2354695, 3027465, 4238451, 7064085, 21192255]

約数ペア:

[(1, 21192255), (3, 7064085), (5, 4238451), (7, 3027465), (9, 2354695), (15, 1412817), (21, 1009155), (35, 605493), (45, 470939), (49, 432495), (63, 336385), (105, 201831), (147, 144165), (245, 86499), (315, 67277), (343, 61785), (441, 48055), (735, 28833), (1029, 20595), (1373, 15435), (1715, 12357), (2205, 9611), (3087, 6865), (4119, 5145)]