21000377090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{4721}}^1$

素因数の和:4908

約数の個数: 128

約数和(自身を含む): 48468119040

約数和(自身を除く): 27467741950

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 53, 55, 70, 77, 106, 109, 110, 154, 218, 265, 371, 385, 530, 545, 583, 742, 763, 770, 1090, 1166, 1199, 1526, 1855, 2398, 2915, 3710, 3815, 4081, 4721, 5777, 5830, 5995, 7630, 8162, 8393, 9442, 11554, 11990, 16786, 20405, 23605, 28885, 33047, 40439, 40810, 41965, 47210, 51931, 57770, 63547, 66094, 80878, 83930, 103862, 127094, 165235, 202195, 250213, 259655, 317735, 330470, 363517, 404390, 444829, 500426, 514589, 519310, 635470, 727034, 889658, 1029178, 1251065, 1751491, 1817585, 2224145, 2502130, 2572945, 2752343, 3502982, 3602123, 3635170, 4448290, 5145890, 5504686, 5660479, 7204246, 8757455, 11320958, 13761715, 17514910, 18010615, 19266401, 27273217, 27523430, 28302395, 36021230, 38532802, 39623353, 54546434, 56604790, 79246706, 96332005, 136366085, 190912519, 192664010, 198116765, 272732170, 300005387, 381825038, 396233530, 600010774, 954562595, 1500026935, 1909125190, 2100037709, 3000053870, 4200075418, 10500188545, 21000377090]

約数ペア:

[(1, 21000377090), (2, 10500188545), (5, 4200075418), (7, 3000053870), (10, 2100037709), (11, 1909125190), (14, 1500026935), (22, 954562595), (35, 600010774), (53, 396233530), (55, 381825038), (70, 300005387), (77, 272732170), (106, 198116765), (109, 192664010), (110, 190912519), (154, 136366085), (218, 96332005), (265, 79246706), (371, 56604790), (385, 54546434), (530, 39623353), (545, 38532802), (583, 36021230), (742, 28302395), (763, 27523430), (770, 27273217), (1090, 19266401), (1166, 18010615), (1199, 17514910), (1526, 13761715), (1855, 11320958), (2398, 8757455), (2915, 7204246), (3710, 5660479), (3815, 5504686), (4081, 5145890), (4721, 4448290), (5777, 3635170), (5830, 3602123), (5995, 3502982), (7630, 2752343), (8162, 2572945), (8393, 2502130), (9442, 2224145), (11554, 1817585), (11990, 1751491), (16786, 1251065), (20405, 1029178), (23605, 889658), (28885, 727034), (33047, 635470), (40439, 519310), (40810, 514589), (41965, 500426), (47210, 444829), (51931, 404390), (57770, 363517), (63547, 330470), (66094, 317735), (80878, 259655), (83930, 250213), (103862, 202195), (127094, 165235)]