40138138

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1\times {\mathrm{641}}^1$

素因数の和:1013

約数の個数: 16

約数和(自身を含む): 61015680

約数和(自身を除く): 20877542

約数列:

[1, 2, 131, 239, 262, 478, 641, 1282, 31309, 62618, 83971, 153199, 167942, 306398, 20069069, 40138138]

約数ペア:

[(1, 40138138), (2, 20069069), (131, 306398), (239, 167942), (262, 153199), (478, 83971), (641, 62618), (1282, 31309)]