21000209022

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2087081}}^1$

素因数の和:2087145

約数の個数: 48

約数和(自身を含む): 50140057968

約数和(自身を除く): 29139848946

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 3354, 5031, 10062, 2087081, 4174162, 6261243, 12522486, 18783729, 27132053, 37567458, 54264106, 81396159, 89744483, 162792318, 179488966, 244188477, 269233449, 488376954, 538466898, 807700347, 1166678279, 1615400694, 2333356558, 3500034837, 7000069674, 10500104511, 21000209022]

約数ペア:

[(1, 21000209022), (2, 10500104511), (3, 7000069674), (6, 3500034837), (9, 2333356558), (13, 1615400694), (18, 1166678279), (26, 807700347), (39, 538466898), (43, 488376954), (78, 269233449), (86, 244188477), (117, 179488966), (129, 162792318), (234, 89744483), (258, 81396159), (387, 54264106), (559, 37567458), (774, 27132053), (1118, 18783729), (1677, 12522486), (3354, 6261243), (5031, 4174162), (10062, 2087081)]