21261129747

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{223}}^1\times {\mathrm{769}}^1$

素因数の和:1053

約数の個数: 96

約数和(自身を含む): 35583313920

約数和(自身を除く): 14322184173

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 143, 187, 221, 223, 289, 429, 561, 663, 669, 769, 867, 2307, 2431, 2453, 2899, 3179, 3757, 3791, 7293, 7359, 8459, 8697, 9537, 9997, 11271, 11373, 13073, 25377, 29991, 31889, 39219, 41327, 41701, 49283, 64447, 95667, 109967, 123981, 125103, 143803, 147849, 169949, 171487, 193341, 222241, 329901, 431409, 509847, 514461, 542113, 666723, 708917, 837811, 1626339, 1869439, 1886357, 2126751, 2229331, 2444651, 2513433, 2889133, 2915279, 5608317, 5659071, 6687993, 7333953, 8667399, 8745837, 9215921, 24522641, 27647763, 31780463, 32068069, 37898627, 49559743, 73567923, 95341389, 96204207, 113695881, 148679229, 416884897, 545157173, 644276659, 1250654691, 1635471519, 1932829977, 7087043249, 21261129747]

約数ペア:

[(1, 21261129747), (3, 7087043249), (11, 1932829977), (13, 1635471519), (17, 1250654691), (33, 644276659), (39, 545157173), (51, 416884897), (143, 148679229), (187, 113695881), (221, 96204207), (223, 95341389), (289, 73567923), (429, 49559743), (561, 37898627), (663, 32068069), (669, 31780463), (769, 27647763), (867, 24522641), (2307, 9215921), (2431, 8745837), (2453, 8667399), (2899, 7333953), (3179, 6687993), (3757, 5659071), (3791, 5608317), (7293, 2915279), (7359, 2889133), (8459, 2513433), (8697, 2444651), (9537, 2229331), (9997, 2126751), (11271, 1886357), (11373, 1869439), (13073, 1626339), (25377, 837811), (29991, 708917), (31889, 666723), (39219, 542113), (41327, 514461), (41701, 509847), (49283, 431409), (64447, 329901), (95667, 222241), (109967, 193341), (123981, 171487), (125103, 169949), (143803, 147849)]