16503920

素因数分解:

$2^4\times 5^1\times {\mathrm{206299}}^1$

素因数の和:206312

約数の個数: 20

約数和(自身を含む): 38371800

約数和(自身を除く): 21867880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 206299, 412598, 825196, 1031495, 1650392, 2062990, 3300784, 4125980, 8251960, 16503920]

約数ペア:

[(1, 16503920), (2, 8251960), (4, 4125980), (5, 3300784), (8, 2062990), (10, 1650392), (16, 1031495), (20, 825196), (40, 412598), (80, 206299)]