21054549

素因数分解:

$3^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 29710560

約数和(自身を除く): 8656011

約数列:

[1, 3, 31, 67, 93, 109, 201, 327, 961, 2077, 2883, 3379, 6231, 7303, 10137, 21909, 64387, 104749, 193161, 226393, 314247, 679179, 7018183, 21054549]

約数ペア:

[(1, 21054549), (3, 7018183), (31, 679179), (67, 314247), (93, 226393), (109, 193161), (201, 104749), (327, 64387), (961, 21909), (2077, 10137), (2883, 7303), (3379, 6231)]