20049215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1\times {\mathrm{557}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 25230528

約数和(自身を除く): 5181313

約数列:

[1, 5, 23, 115, 313, 557, 1565, 2785, 7199, 12811, 35995, 64055, 174341, 871705, 4009843, 20049215]

約数ペア:

[(1, 20049215), (5, 4009843), (23, 871705), (115, 174341), (313, 64055), (557, 35995), (1565, 12811), (2785, 7199)]