21257136

素因数分解:

$2^4\times 3^2\times {\mathrm{43}}^1\times {\mathrm{3433}}^1$

素因数の和:3490

約数の個数: 60

約数和(自身を含む): 60891688

約数和(自身を除く): 39634552

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 43, 48, 72, 86, 129, 144, 172, 258, 344, 387, 516, 688, 774, 1032, 1548, 2064, 3096, 3433, 6192, 6866, 10299, 13732, 20598, 27464, 30897, 41196, 54928, 61794, 82392, 123588, 147619, 164784, 247176, 295238, 442857, 494352, 590476, 885714, 1180952, 1328571, 1771428, 2361904, 2657142, 3542856, 5314284, 7085712, 10628568, 21257136]

約数ペア:

[(1, 21257136), (2, 10628568), (3, 7085712), (4, 5314284), (6, 3542856), (8, 2657142), (9, 2361904), (12, 1771428), (16, 1328571), (18, 1180952), (24, 885714), (36, 590476), (43, 494352), (48, 442857), (72, 295238), (86, 247176), (129, 164784), (144, 147619), (172, 123588), (258, 82392), (344, 61794), (387, 54928), (516, 41196), (688, 30897), (774, 27464), (1032, 20598), (1548, 13732), (2064, 10299), (3096, 6866), (3433, 6192)]