28577205

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1779

約数の個数: 40

約数和(自身を含む): 52507224

約数和(自身を除く): 23930019

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 205, 369, 405, 615, 1107, 1721, 1845, 3321, 5163, 5535, 8605, 15489, 16605, 25815, 46467, 70561, 77445, 139401, 211683, 232335, 352805, 635049, 697005, 1058415, 1905147, 3175245, 5715441, 9525735, 28577205]

約数ペア:

[(1, 28577205), (3, 9525735), (5, 5715441), (9, 3175245), (15, 1905147), (27, 1058415), (41, 697005), (45, 635049), (81, 352805), (123, 232335), (135, 211683), (205, 139401), (369, 77445), (405, 70561), (615, 46467), (1107, 25815), (1721, 16605), (1845, 15489), (3321, 8605), (5163, 5535)]