77678860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{554849}}^1$

素因数の和:554865

約数の個数: 24

約数和(自身を含む): 186429600

約数和(自身を除く): 108750740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 554849, 1109698, 2219396, 2774245, 3883943, 5548490, 7767886, 11096980, 15535772, 19419715, 38839430, 77678860]

約数ペア:

[(1, 77678860), (2, 38839430), (4, 19419715), (5, 15535772), (7, 11096980), (10, 7767886), (14, 5548490), (20, 3883943), (28, 2774245), (35, 2219396), (70, 1109698), (140, 554849)]