21493030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{165331}}^1$

素因数の和:165351

約数の個数: 16

約数和(自身を含む): 41663664

約数和(自身を除く): 20170634

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 165331, 330662, 826655, 1653310, 2149303, 4298606, 10746515, 21493030]

約数ペア:

[(1, 21493030), (2, 10746515), (5, 4298606), (10, 2149303), (13, 1653310), (26, 826655), (65, 330662), (130, 165331)]