20720673

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 30667520

約数和(自身を除く): 9946847

約数列:

[1, 3, 9, 79, 151, 193, 237, 453, 579, 711, 1359, 1737, 11929, 15247, 29143, 35787, 45741, 87429, 107361, 137223, 262287, 2302297, 6906891, 20720673]

約数ペア:

[(1, 20720673), (3, 6906891), (9, 2302297), (79, 262287), (151, 137223), (193, 107361), (237, 87429), (453, 45741), (579, 35787), (711, 29143), (1359, 15247), (1737, 11929)]