81380558

素因数分解:

$2^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{13487}}^1$

素因数の和:13927

約数の個数: 16

約数和(自身を含む): 139843584

約数和(自身を除く): 58463026

約数列:

[1, 2, 7, 14, 431, 862, 3017, 6034, 13487, 26974, 94409, 188818, 5812897, 11625794, 40690279, 81380558]

約数ペア:

[(1, 81380558), (2, 40690279), (7, 11625794), (14, 5812897), (431, 188818), (862, 94409), (3017, 26974), (6034, 13487)]