19973779

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1613}}^1$

素因数の和:1710

約数の個数: 16

約数和(自身を含む): 24016320

約数和(自身を除く): 4042541

約数列:

[1, 7, 29, 61, 203, 427, 1613, 1769, 11291, 12383, 46777, 98393, 327439, 688751, 2853397, 19973779]

約数ペア:

[(1, 19973779), (7, 2853397), (29, 688751), (61, 327439), (203, 98393), (427, 46777), (1613, 12383), (1769, 11291)]