20101985

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 24624000

約数和(自身を除く): 4522015

約数列:

[1, 5, 89, 199, 227, 445, 995, 1135, 17711, 20203, 45173, 88555, 101015, 225865, 4020397, 20101985]

約数ペア:

[(1, 20101985), (5, 4020397), (89, 225865), (199, 101015), (227, 88555), (445, 45173), (995, 20203), (1135, 17711)]