21343257

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20269}}^1$

素因数の和:20294

約数の個数: 20

約数和(自身を含む): 34337380

約数和(自身を除く): 12994123

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20269, 60807, 182421, 263497, 547263, 790491, 1641789, 2371473, 7114419, 21343257]

約数ペア:

[(1, 21343257), (3, 7114419), (9, 2371473), (13, 1641789), (27, 790491), (39, 547263), (81, 263497), (117, 182421), (351, 60807), (1053, 20269)]