21000496950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{63841}}^1$

素因数の和:63919

約数の個数: 144

約数和(自身を含む): 61130502576

約数和(自身を除く): 40130005626

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 25, 30, 34, 43, 45, 50, 51, 75, 85, 86, 90, 102, 129, 150, 153, 170, 215, 225, 255, 258, 306, 387, 425, 430, 450, 510, 645, 731, 765, 774, 850, 1075, 1275, 1290, 1462, 1530, 1935, 2150, 2193, 2550, 3225, 3655, 3825, 3870, 4386, 6450, 6579, 7310, 7650, 9675, 10965, 13158, 18275, 19350, 21930, 32895, 36550, 54825, 63841, 65790, 109650, 127682, 164475, 191523, 319205, 328950, 383046, 574569, 638410, 957615, 1085297, 1149138, 1596025, 1915230, 2170594, 2745163, 2872845, 3192050, 3255891, 4788075, 5426485, 5490326, 5745690, 6511782, 8235489, 9576150, 9767673, 10852970, 13725815, 14364225, 16279455, 16470978, 19535346, 24706467, 27132425, 27451630, 28728450, 32558910, 41177445, 46667771, 48838365, 49412934, 54264850, 68629075, 81397275, 82354890, 93335542, 97676730, 123532335, 137258150, 140003313, 162794550, 205887225, 233338855, 244191825, 247064670, 280006626, 411774450, 420009939, 466677710, 488383650, 617661675, 700016565, 840019878, 1166694275, 1235323350, 1400033130, 2100049695, 2333388550, 3500082825, 4200099390, 7000165650, 10500248475, 21000496950]

約数ペア:

[(1, 21000496950), (2, 10500248475), (3, 7000165650), (5, 4200099390), (6, 3500082825), (9, 2333388550), (10, 2100049695), (15, 1400033130), (17, 1235323350), (18, 1166694275), (25, 840019878), (30, 700016565), (34, 617661675), (43, 488383650), (45, 466677710), (50, 420009939), (51, 411774450), (75, 280006626), (85, 247064670), (86, 244191825), (90, 233338855), (102, 205887225), (129, 162794550), (150, 140003313), (153, 137258150), (170, 123532335), (215, 97676730), (225, 93335542), (255, 82354890), (258, 81397275), (306, 68629075), (387, 54264850), (425, 49412934), (430, 48838365), (450, 46667771), (510, 41177445), (645, 32558910), (731, 28728450), (765, 27451630), (774, 27132425), (850, 24706467), (1075, 19535346), (1275, 16470978), (1290, 16279455), (1462, 14364225), (1530, 13725815), (1935, 10852970), (2150, 9767673), (2193, 9576150), (2550, 8235489), (3225, 6511782), (3655, 5745690), (3825, 5490326), (3870, 5426485), (4386, 4788075), (6450, 3255891), (6579, 3192050), (7310, 2872845), (7650, 2745163), (9675, 2170594), (10965, 1915230), (13158, 1596025), (18275, 1149138), (19350, 1085297), (21930, 957615), (32895, 638410), (36550, 574569), (54825, 383046), (63841, 328950), (65790, 319205), (109650, 191523), (127682, 164475)]