19427888

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{2473}}^1$

素因数の和:2972

約数の個数: 20

約数和(自身を含む): 37733448

約数和(自身を除く): 18305560

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 2473, 3928, 4946, 7856, 9892, 19784, 39568, 1214243, 2428486, 4856972, 9713944, 19427888]

約数ペア:

[(1, 19427888), (2, 9713944), (4, 4856972), (8, 2428486), (16, 1214243), (491, 39568), (982, 19784), (1964, 9892), (2473, 7856), (3928, 4946)]