208775215

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{383}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 297851904

約数和(自身を除く): 89076689

約数列:

[1, 5, 11, 17, 53, 55, 85, 121, 187, 265, 383, 583, 605, 901, 935, 1915, 2057, 2915, 4213, 4505, 6413, 6511, 9911, 10285, 20299, 21065, 32065, 32555, 46343, 49555, 71621, 101495, 109021, 223289, 231715, 345083, 358105, 545105, 787831, 1116445, 1725415, 2456179, 3795913, 3939155, 12280895, 18979565, 41755043, 208775215]

約数ペア:

[(1, 208775215), (5, 41755043), (11, 18979565), (17, 12280895), (53, 3939155), (55, 3795913), (85, 2456179), (121, 1725415), (187, 1116445), (265, 787831), (383, 545105), (583, 358105), (605, 345083), (901, 231715), (935, 223289), (1915, 109021), (2057, 101495), (2915, 71621), (4213, 49555), (4505, 46343), (6413, 32555), (6511, 32065), (9911, 21065), (10285, 20299)]