21340445

素因数分解:

$5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{4801}}^1$

素因数の和:4940

約数の個数: 16

約数和(自身を含む): 29503488

約数和(自身を除く): 8163043

約数列:

[1, 5, 7, 35, 127, 635, 889, 4445, 4801, 24005, 33607, 168035, 609727, 3048635, 4268089, 21340445]

約数ペア:

[(1, 21340445), (5, 4268089), (7, 3048635), (35, 609727), (127, 168035), (635, 33607), (889, 24005), (4445, 4801)]