20402465

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{5107}}^1$

素因数の和:5176

約数の個数: 16

約数和(自身を含む): 26479872

約数和(自身を除く): 6077407

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 5107, 25535, 86819, 240029, 434095, 1200145, 4080493, 20402465]

約数ペア:

[(1, 20402465), (5, 4080493), (17, 1200145), (47, 434095), (85, 240029), (235, 86819), (799, 25535), (3995, 5107)]