21328974

素因数分解:

$2^1\times 3^3\times {\mathrm{394981}}^1$

素因数の和:394992

約数の個数: 16

約数和(自身を含む): 47397840

約数和(自身を除く): 26068866

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 394981, 789962, 1184943, 2369886, 3554829, 7109658, 10664487, 21328974]

約数ペア:

[(1, 21328974), (2, 10664487), (3, 7109658), (6, 3554829), (9, 2369886), (18, 1184943), (27, 789962), (54, 394981)]