2100215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:506

約数の個数: 16

約数和(自身を含む): 2755200

約数和(自身を除く): 654985

約数列:

[1, 5, 13, 65, 79, 395, 409, 1027, 2045, 5135, 5317, 26585, 32311, 161555, 420043, 2100215]

約数ペア:

[(1, 2100215), (5, 420043), (13, 161555), (65, 32311), (79, 26585), (395, 5317), (409, 5135), (1027, 2045)]