81377779

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{12487}}^1$

素因数の和:12527

約数の個数: 16

約数和(自身を含む): 99904000

約数和(自身を除く): 18526221

約数列:

[1, 7, 19, 49, 133, 343, 931, 6517, 12487, 87409, 237253, 611863, 1660771, 4283041, 11625397, 81377779]

約数ペア:

[(1, 81377779), (7, 11625397), (19, 4283041), (49, 1660771), (133, 611863), (343, 237253), (931, 87409), (6517, 12487)]