28236439

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 39299904

約数和(自身を除く): 11063465

約数列:

[1, 7, 11, 17, 37, 53, 77, 119, 121, 187, 259, 371, 407, 583, 629, 847, 901, 1309, 1961, 2057, 2849, 4081, 4403, 4477, 6307, 6413, 6919, 9911, 13727, 14399, 21571, 31339, 33337, 44891, 48433, 69377, 76109, 109021, 150997, 233359, 237281, 366707, 532763, 763147, 1660967, 2566949, 4033777, 28236439]

約数ペア:

[(1, 28236439), (7, 4033777), (11, 2566949), (17, 1660967), (37, 763147), (53, 532763), (77, 366707), (119, 237281), (121, 233359), (187, 150997), (259, 109021), (371, 76109), (407, 69377), (583, 48433), (629, 44891), (847, 33337), (901, 31339), (1309, 21571), (1961, 14399), (2057, 13727), (2849, 9911), (4081, 6919), (4403, 6413), (4477, 6307)]