85220180

素因数分解:

$2^2\times 5^1\times {\mathrm{4261009}}^1$

素因数の和:4261018

約数の個数: 12

約数和(自身を含む): 178962420

約数和(自身を除く): 93742240

約数列:

[1, 2, 4, 5, 10, 20, 4261009, 8522018, 17044036, 21305045, 42610090, 85220180]

約数ペア:

[(1, 85220180), (2, 42610090), (4, 21305045), (5, 17044036), (10, 8522018), (20, 4261009)]