21000612325

素因数分解:

$5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3323}}^1$

素因数の和:3432

約数の個数: 96

約数和(自身を含む): 33633561600

約数和(自身を除く): 12632949275

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 67, 77, 175, 245, 275, 335, 343, 385, 469, 539, 737, 1225, 1675, 1715, 1925, 2345, 2695, 3283, 3323, 3685, 3773, 5159, 8575, 11725, 13475, 16415, 16615, 18425, 18865, 22981, 23261, 25795, 36113, 36553, 82075, 83075, 94325, 114905, 116305, 128975, 162827, 180565, 182765, 222641, 252791, 255871, 574525, 581525, 814135, 902825, 913825, 1113205, 1139789, 1263955, 1279355, 1558487, 1791097, 2449051, 4070675, 5566025, 5698945, 6319775, 6396775, 7792435, 8955485, 10909409, 12245255, 12537679, 17143357, 28494725, 38962175, 44777425, 54547045, 61226275, 62688395, 76365863, 85716785, 120003499, 272735225, 313441975, 381829315, 428583925, 600017495, 840024493, 1909146575, 3000087475, 4200122465, 21000612325]

約数ペア:

[(1, 21000612325), (5, 4200122465), (7, 3000087475), (11, 1909146575), (25, 840024493), (35, 600017495), (49, 428583925), (55, 381829315), (67, 313441975), (77, 272735225), (175, 120003499), (245, 85716785), (275, 76365863), (335, 62688395), (343, 61226275), (385, 54547045), (469, 44777425), (539, 38962175), (737, 28494725), (1225, 17143357), (1675, 12537679), (1715, 12245255), (1925, 10909409), (2345, 8955485), (2695, 7792435), (3283, 6396775), (3323, 6319775), (3685, 5698945), (3773, 5566025), (5159, 4070675), (8575, 2449051), (11725, 1791097), (13475, 1558487), (16415, 1279355), (16615, 1263955), (18425, 1139789), (18865, 1113205), (22981, 913825), (23261, 902825), (25795, 814135), (36113, 581525), (36553, 574525), (82075, 255871), (83075, 252791), (94325, 222641), (114905, 182765), (116305, 180565), (128975, 162827)]