2051991

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{431}}^1$

素因数の和:483

約数の個数: 18

約数和(自身を含む): 3105648

約数和(自身を除く): 1053657

約数列:

[1, 3, 9, 23, 69, 207, 431, 529, 1293, 1587, 3879, 4761, 9913, 29739, 89217, 227999, 683997, 2051991]

約数ペア:

[(1, 2051991), (3, 683997), (9, 227999), (23, 89217), (69, 29739), (207, 9913), (431, 4761), (529, 3879), (1293, 1587)]