21916784

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{15391}}^1$

素因数の和:15488

約数の個数: 20

約数和(自身を含む): 42943680

約数和(自身を除く): 21026896

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 15391, 30782, 61564, 123128, 246256, 1369799, 2739598, 5479196, 10958392, 21916784]

約数ペア:

[(1, 21916784), (2, 10958392), (4, 5479196), (8, 2739598), (16, 1369799), (89, 246256), (178, 123128), (356, 61564), (712, 30782), (1424, 15391)]