256779817

素因数分解:

$7^1\times {\mathrm{223}}^1\times {\mathrm{271}}^1\times {\mathrm{607}}^1$

素因数の和:1108

約数の個数: 16

約数和(自身を含む): 296353792

約数和(自身を除く): 39573975

約数列:

[1, 7, 223, 271, 607, 1561, 1897, 4249, 60433, 135361, 164497, 423031, 947527, 1151479, 36682831, 256779817]

約数ペア:

[(1, 256779817), (7, 36682831), (223, 1151479), (271, 947527), (607, 423031), (1561, 164497), (1897, 135361), (4249, 60433)]