20401390

素因数分解:

$2^1\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{1499}}^1$

素因数の和:2867

約数の個数: 16

約数和(自身を含む): 36774000

約数和(自身を除く): 16372610

約数列:

[1, 2, 5, 10, 1361, 1499, 2722, 2998, 6805, 7495, 13610, 14990, 2040139, 4080278, 10200695, 20401390]

約数ペア:

[(1, 20401390), (2, 10200695), (5, 4080278), (10, 2040139), (1361, 14990), (1499, 13610), (2722, 7495), (2998, 6805)]