25991221

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1188

約数の個数: 16

約数和(自身を含む): 28987200

約数和(自身を除く): 2995979

約数列:

[1, 19, 29, 43, 551, 817, 1097, 1247, 20843, 23693, 31813, 47171, 604447, 896249, 1367959, 25991221]

約数ペア:

[(1, 25991221), (19, 1367959), (29, 896249), (43, 604447), (551, 47171), (817, 31813), (1097, 23693), (1247, 20843)]