16989231

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2459}}^1$

素因数の和:2523

約数の個数: 24

約数和(自身を含む): 26922240

約数和(自身を除く): 9933009

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2459, 6909, 7377, 17213, 51639, 115573, 120491, 346719, 361473, 809011, 2427033, 5663077, 16989231]

約数ペア:

[(1, 16989231), (3, 5663077), (7, 2427033), (21, 809011), (47, 361473), (49, 346719), (141, 120491), (147, 115573), (329, 51639), (987, 17213), (2303, 7377), (2459, 6909)]