81781756

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{55109}}^1$

素因数の和:55173

約数の個数: 24

約数和(自身を含む): 166652640

約数和(自身を除く): 84870884

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 55109, 110218, 220436, 385763, 771526, 1543052, 2920777, 5841554, 11683108, 20445439, 40890878, 81781756]

約数ペア:

[(1, 81781756), (2, 40890878), (4, 20445439), (7, 11683108), (14, 5841554), (28, 2920777), (53, 1543052), (106, 771526), (212, 385763), (371, 220436), (742, 110218), (1484, 55109)]