20451490

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20249}}^1$

素因数の和:20357

約数の個数: 16

約数和(自身を含む): 37179000

約数和(自身を除く): 16727510

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 20249, 40498, 101245, 202490, 2045149, 4090298, 10225745, 20451490]

約数ペア:

[(1, 20451490), (2, 10225745), (5, 4090298), (10, 2045149), (101, 202490), (202, 101245), (505, 40498), (1010, 20249)]