81336825

素因数分解:

$3^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2939}}^1$

素因数の和:2999

約数の個数: 48

約数和(自身を含む): 153115200

約数和(自身を除く): 71778375

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 123, 135, 205, 225, 369, 615, 675, 1025, 1107, 1845, 2939, 3075, 5535, 8817, 9225, 14695, 26451, 27675, 44085, 73475, 79353, 120499, 132255, 220425, 361497, 396765, 602495, 661275, 1084491, 1807485, 1983825, 3012475, 3253473, 5422455, 9037425, 16267365, 27112275, 81336825]

約数ペア:

[(1, 81336825), (3, 27112275), (5, 16267365), (9, 9037425), (15, 5422455), (25, 3253473), (27, 3012475), (41, 1983825), (45, 1807485), (75, 1084491), (123, 661275), (135, 602495), (205, 396765), (225, 361497), (369, 220425), (615, 132255), (675, 120499), (1025, 79353), (1107, 73475), (1845, 44085), (2939, 27675), (3075, 26451), (5535, 14695), (8817, 9225)]