19190997

素因数分解:

$3^2\times 7^2\times {\mathrm{43517}}^1$

素因数の和:43537

約数の個数: 18

約数和(自身を含む): 32246838

約数和(自身を除く): 13055841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43517, 130551, 304619, 391653, 913857, 2132333, 2741571, 6396999, 19190997]

約数ペア:

[(1, 19190997), (3, 6396999), (7, 2741571), (9, 2132333), (21, 913857), (49, 391653), (63, 304619), (147, 130551), (441, 43517)]