7865991

素因数分解:

$3^4\times 7^1\times {\mathrm{13873}}^1$

素因数の和:13892

約数の個数: 20

約数和(自身を含む): 13430032

約数和(自身を除く): 5564041

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 13873, 41619, 97111, 124857, 291333, 374571, 873999, 1123713, 2621997, 7865991]

約数ペア:

[(1, 7865991), (3, 2621997), (7, 1123713), (9, 873999), (21, 374571), (27, 291333), (63, 124857), (81, 97111), (189, 41619), (567, 13873)]