17881238

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:763

約数の個数: 16

約数和(自身を含む): 27276480

約数和(自身を除く): 9395242

約数列:

[1, 2, 131, 139, 262, 278, 491, 982, 18209, 36418, 64321, 68249, 128642, 136498, 8940619, 17881238]

約数ペア:

[(1, 17881238), (2, 8940619), (131, 136498), (139, 128642), (262, 68249), (278, 64321), (491, 36418), (982, 18209)]