20874505

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{769}}^1$

素因数の和:924

約数の個数: 16

約数和(自身を含む): 25779600

約数和(自身を除く): 4905095

約数列:

[1, 5, 61, 89, 305, 445, 769, 3845, 5429, 27145, 46909, 68441, 234545, 342205, 4174901, 20874505]

約数ペア:

[(1, 20874505), (5, 4174901), (61, 342205), (89, 234545), (305, 68441), (445, 46909), (769, 27145), (3845, 5429)]