202050020

素因数分解:

$2^2\times 5^1\times {\mathrm{10102501}}^1$

素因数の和:10102510

約数の個数: 12

約数和(自身を含む): 424305084

約数和(自身を除く): 222255064

約数列:

[1, 2, 4, 5, 10, 20, 10102501, 20205002, 40410004, 50512505, 101025010, 202050020]

約数ペア:

[(1, 202050020), (2, 101025010), (4, 50512505), (5, 40410004), (10, 20205002), (20, 10102501)]