21050488

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4993}}^1$

素因数の和:5047

約数の個数: 32

約数和(自身を含む): 43148160

約数和(自身を除く): 22097672

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 4993, 9986, 19972, 39944, 84881, 154783, 169762, 309566, 339524, 619132, 679048, 1238264, 2631311, 5262622, 10525244, 21050488]

約数ペア:

[(1, 21050488), (2, 10525244), (4, 5262622), (8, 2631311), (17, 1238264), (31, 679048), (34, 619132), (62, 339524), (68, 309566), (124, 169762), (136, 154783), (248, 84881), (527, 39944), (1054, 19972), (2108, 9986), (4216, 4993)]