128370249

素因数分解:

$3^2\times 7^2\times {\mathrm{291089}}^1$

素因数の和:291109

約数の個数: 18

約数和(自身を含む): 215697690

約数和(自身を除く): 87327441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 291089, 873267, 2037623, 2619801, 6112869, 14263361, 18338607, 42790083, 128370249]

約数ペア:

[(1, 128370249), (3, 42790083), (7, 18338607), (9, 14263361), (21, 6112869), (49, 2619801), (63, 2037623), (147, 873267), (441, 291089)]