18862821

素因数分解:

$3^3\times {\mathrm{131}}^1\times {\mathrm{5333}}^1$

素因数の和:5473

約数の個数: 16

約数和(自身を含む): 28163520

約数和(自身を除く): 9300699

約数列:

[1, 3, 9, 27, 131, 393, 1179, 3537, 5333, 15999, 47997, 143991, 698623, 2095869, 6287607, 18862821]

約数ペア:

[(1, 18862821), (3, 6287607), (9, 2095869), (27, 698623), (131, 143991), (393, 47997), (1179, 15999), (3537, 5333)]