213130180

素因数分解:

$2^2\times 5^1\times {\mathrm{10656509}}^1$

素因数の和:10656518

約数の個数: 12

約数和(自身を含む): 447573420

約数和(自身を除く): 234443240

約数列:

[1, 2, 4, 5, 10, 20, 10656509, 21313018, 42626036, 53282545, 106565090, 213130180]

約数ペア:

[(1, 213130180), (2, 106565090), (4, 53282545), (5, 42626036), (10, 21313018), (20, 10656509)]