21849741

素因数分解:

$3^2\times {\mathrm{79}}^2\times {\mathrm{389}}^1$

素因数の和:553

約数の個数: 18

約数和(自身を含む): 32047470

約数和(自身を除く): 10197729

約数列:

[1, 3, 9, 79, 237, 389, 711, 1167, 3501, 6241, 18723, 30731, 56169, 92193, 276579, 2427749, 7283247, 21849741]

約数ペア:

[(1, 21849741), (3, 7283247), (9, 2427749), (79, 276579), (237, 92193), (389, 56169), (711, 30731), (1167, 18723), (3501, 6241)]