20838855

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1151}}^1$

素因数の和:1247

約数の個数: 32

約数和(自身を含む): 35831808

約数和(自身を除く): 14992953

約数列:

[1, 3, 5, 15, 17, 51, 71, 85, 213, 255, 355, 1065, 1151, 1207, 3453, 3621, 5755, 6035, 17265, 18105, 19567, 58701, 81721, 97835, 245163, 293505, 408605, 1225815, 1389257, 4167771, 6946285, 20838855]

約数ペア:

[(1, 20838855), (3, 6946285), (5, 4167771), (15, 1389257), (17, 1225815), (51, 408605), (71, 293505), (85, 245163), (213, 97835), (255, 81721), (355, 58701), (1065, 19567), (1151, 18105), (1207, 17265), (3453, 6035), (3621, 5755)]