21051810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{947}}^1$

素因数の和:992

約数の個数: 96

約数和(自身を含む): 62112960

約数和(自身を除く): 41061150

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 19, 26, 30, 38, 39, 45, 57, 65, 78, 90, 95, 114, 117, 130, 171, 190, 195, 234, 247, 285, 342, 390, 494, 570, 585, 741, 855, 947, 1170, 1235, 1482, 1710, 1894, 2223, 2470, 2841, 3705, 4446, 4735, 5682, 7410, 8523, 9470, 11115, 12311, 14205, 17046, 17993, 22230, 24622, 28410, 35986, 36933, 42615, 53979, 61555, 73866, 85230, 89965, 107958, 110799, 123110, 161937, 179930, 184665, 221598, 233909, 269895, 323874, 369330, 467818, 539790, 553995, 701727, 809685, 1107990, 1169545, 1403454, 1619370, 2105181, 2339090, 3508635, 4210362, 7017270, 10525905, 21051810]

約数ペア:

[(1, 21051810), (2, 10525905), (3, 7017270), (5, 4210362), (6, 3508635), (9, 2339090), (10, 2105181), (13, 1619370), (15, 1403454), (18, 1169545), (19, 1107990), (26, 809685), (30, 701727), (38, 553995), (39, 539790), (45, 467818), (57, 369330), (65, 323874), (78, 269895), (90, 233909), (95, 221598), (114, 184665), (117, 179930), (130, 161937), (171, 123110), (190, 110799), (195, 107958), (234, 89965), (247, 85230), (285, 73866), (342, 61555), (390, 53979), (494, 42615), (570, 36933), (585, 35986), (741, 28410), (855, 24622), (947, 22230), (1170, 17993), (1235, 17046), (1482, 14205), (1710, 12311), (1894, 11115), (2223, 9470), (2470, 8523), (2841, 7410), (3705, 5682), (4446, 4735)]