28123810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 60528384

約数和(自身を除く): 32404574

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 71, 110, 130, 142, 143, 277, 286, 355, 554, 710, 715, 781, 923, 1385, 1430, 1562, 1846, 2770, 3047, 3601, 3905, 4615, 6094, 7202, 7810, 9230, 10153, 15235, 18005, 19667, 20306, 30470, 36010, 39334, 39611, 50765, 79222, 98335, 101530, 196670, 198055, 216337, 255671, 396110, 432674, 511342, 1081685, 1278355, 2163370, 2556710, 2812381, 5624762, 14061905, 28123810]

約数ペア:

[(1, 28123810), (2, 14061905), (5, 5624762), (10, 2812381), (11, 2556710), (13, 2163370), (22, 1278355), (26, 1081685), (55, 511342), (65, 432674), (71, 396110), (110, 255671), (130, 216337), (142, 198055), (143, 196670), (277, 101530), (286, 98335), (355, 79222), (554, 50765), (710, 39611), (715, 39334), (781, 36010), (923, 30470), (1385, 20306), (1430, 19667), (1562, 18005), (1846, 15235), (2770, 10153), (3047, 9230), (3601, 7810), (3905, 7202), (4615, 6094)]