21394130

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{20771}}^1$

素因数の和:20881

約数の個数: 16

約数和(自身を含む): 38885184

約数和(自身を除く): 17491054

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 20771, 41542, 103855, 207710, 2139413, 4278826, 10697065, 21394130]

約数ペア:

[(1, 21394130), (2, 10697065), (5, 4278826), (10, 2139413), (103, 207710), (206, 103855), (515, 41542), (1030, 20771)]