81398942

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{359}}^1\times {\mathrm{1553}}^1$

素因数の和:1987

約数の個数: 16

約数和(自身を含む): 124195680

約数和(自身を除く): 42796738

約数列:

[1, 2, 73, 146, 359, 718, 1553, 3106, 26207, 52414, 113369, 226738, 557527, 1115054, 40699471, 81398942]

約数ペア:

[(1, 81398942), (2, 40699471), (73, 1115054), (146, 557527), (359, 226738), (718, 113369), (1553, 52414), (3106, 26207)]