20959767

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:423

約数の個数: 24

約数和(自身を含む): 31000320

約数和(自身を除く): 10040553

約数列:

[1, 3, 9, 89, 137, 191, 267, 411, 573, 801, 1233, 1719, 12193, 16999, 26167, 36579, 50997, 78501, 109737, 152991, 235503, 2328863, 6986589, 20959767]

約数ペア:

[(1, 20959767), (3, 6986589), (9, 2328863), (89, 235503), (137, 152991), (191, 109737), (267, 78501), (411, 50997), (573, 36579), (801, 26167), (1233, 16999), (1719, 12193)]