28736895

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 51480576

約数和(自身を除く): 22743681

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 121, 165, 213, 223, 355, 363, 605, 669, 781, 1065, 1115, 1815, 2343, 2453, 3345, 3905, 7359, 8591, 11715, 12265, 15833, 25773, 26983, 36795, 42955, 47499, 79165, 80949, 128865, 134915, 174163, 237495, 404745, 522489, 870815, 1915793, 2612445, 5747379, 9578965, 28736895]

約数ペア:

[(1, 28736895), (3, 9578965), (5, 5747379), (11, 2612445), (15, 1915793), (33, 870815), (55, 522489), (71, 404745), (121, 237495), (165, 174163), (213, 134915), (223, 128865), (355, 80949), (363, 79165), (605, 47499), (669, 42955), (781, 36795), (1065, 26983), (1115, 25773), (1815, 15833), (2343, 12265), (2453, 11715), (3345, 8591), (3905, 7359)]