278887895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 413005824

約数和(自身を除く): 134117929

約数列:

[1, 5, 11, 13, 43, 47, 55, 65, 143, 193, 215, 235, 473, 517, 559, 611, 715, 965, 2021, 2123, 2365, 2509, 2585, 2795, 3055, 6149, 6721, 8299, 9071, 10105, 10615, 12545, 22231, 26273, 27599, 30745, 33605, 41495, 45355, 91289, 99781, 107887, 111155, 117923, 131365, 137995, 289003, 390053, 456445, 498905, 539435, 589615, 1186757, 1297153, 1445015, 1950265, 4290583, 5070689, 5933785, 6485765, 21452915, 25353445, 55777579, 278887895]

約数ペア:

[(1, 278887895), (5, 55777579), (11, 25353445), (13, 21452915), (43, 6485765), (47, 5933785), (55, 5070689), (65, 4290583), (143, 1950265), (193, 1445015), (215, 1297153), (235, 1186757), (473, 589615), (517, 539435), (559, 498905), (611, 456445), (715, 390053), (965, 289003), (2021, 137995), (2123, 131365), (2365, 117923), (2509, 111155), (2585, 107887), (2795, 99781), (3055, 91289), (6149, 45355), (6721, 41495), (8299, 33605), (9071, 30745), (10105, 27599), (10615, 26273), (12545, 22231)]