28385925

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 50234880

約数和(自身を除く): 21848955

約数列:

[1, 3, 5, 15, 25, 29, 31, 75, 87, 93, 145, 155, 421, 435, 465, 725, 775, 899, 1263, 2105, 2175, 2325, 2697, 4495, 6315, 10525, 12209, 13051, 13485, 22475, 31575, 36627, 39153, 61045, 65255, 67425, 183135, 195765, 305225, 326275, 378479, 915675, 978825, 1135437, 1892395, 5677185, 9461975, 28385925]

約数ペア:

[(1, 28385925), (3, 9461975), (5, 5677185), (15, 1892395), (25, 1135437), (29, 978825), (31, 915675), (75, 378479), (87, 326275), (93, 305225), (145, 195765), (155, 183135), (421, 67425), (435, 65255), (465, 61045), (725, 39153), (775, 36627), (899, 31575), (1263, 22475), (2105, 13485), (2175, 13051), (2325, 12209), (2697, 10525), (4495, 6315)]