87890705

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 129959424

約数和(自身を除く): 42068719

約数列:

[1, 5, 7, 23, 35, 47, 101, 115, 161, 235, 329, 505, 529, 707, 805, 1081, 1645, 2323, 2645, 3535, 3703, 4747, 5405, 7567, 11615, 16261, 18515, 23735, 24863, 33229, 37835, 53429, 81305, 109181, 124315, 166145, 174041, 267145, 374003, 545905, 764267, 870205, 1870015, 2511163, 3821335, 12555815, 17578141, 87890705]

約数ペア:

[(1, 87890705), (5, 17578141), (7, 12555815), (23, 3821335), (35, 2511163), (47, 1870015), (101, 870205), (115, 764267), (161, 545905), (235, 374003), (329, 267145), (505, 174041), (529, 166145), (707, 124315), (805, 109181), (1081, 81305), (1645, 53429), (2323, 37835), (2645, 33229), (3535, 24863), (3703, 23735), (4747, 18515), (5405, 16261), (7567, 11615)]