21438027

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20359}}^1$

素因数の和:20384

約数の個数: 20

約数和(自身を含む): 34489840

約数和(自身を除く): 13051813

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20359, 61077, 183231, 264667, 549693, 794001, 1649079, 2382003, 7146009, 21438027]

約数ペア:

[(1, 21438027), (3, 7146009), (9, 2382003), (13, 1649079), (27, 794001), (39, 549693), (81, 264667), (117, 183231), (351, 61077), (1053, 20359)]