221330888

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{643}}^1\times {\mathrm{2531}}^1$

素因数の和:3197

約数の個数: 32

約数和(自身を含む): 440264160

約数和(自身を除く): 218933272

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 643, 1286, 2531, 2572, 5062, 5144, 10124, 10931, 20248, 21862, 43027, 43724, 86054, 87448, 172108, 344216, 1627433, 3254866, 6509732, 13019464, 27666361, 55332722, 110665444, 221330888]

約数ペア:

[(1, 221330888), (2, 110665444), (4, 55332722), (8, 27666361), (17, 13019464), (34, 6509732), (68, 3254866), (136, 1627433), (643, 344216), (1286, 172108), (2531, 87448), (2572, 86054), (5062, 43724), (5144, 43027), (10124, 21862), (10931, 20248)]