21682395

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4049}}^1$

素因数の和:4084

約数の個数: 48

約数和(自身を含む): 45489600

約数和(自身を除く): 23807205

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 4049, 5355, 12147, 20245, 28343, 36441, 60735, 68833, 85029, 141715, 182205, 206499, 255087, 344165, 425145, 481831, 619497, 1032495, 1275435, 1445493, 2409155, 3097485, 4336479, 7227465, 21682395]

約数ペア:

[(1, 21682395), (3, 7227465), (5, 4336479), (7, 3097485), (9, 2409155), (15, 1445493), (17, 1275435), (21, 1032495), (35, 619497), (45, 481831), (51, 425145), (63, 344165), (85, 255087), (105, 206499), (119, 182205), (153, 141715), (255, 85029), (315, 68833), (357, 60735), (595, 36441), (765, 28343), (1071, 20245), (1785, 12147), (4049, 5355)]