19509904

素因数分解:

$2^4\times {\mathrm{211}}^1\times {\mathrm{5779}}^1$

素因数の和:5998

約数の個数: 20

約数和(自身を含む): 37986160

約数和(自身を除く): 18476256

約数列:

[1, 2, 4, 8, 16, 211, 422, 844, 1688, 3376, 5779, 11558, 23116, 46232, 92464, 1219369, 2438738, 4877476, 9754952, 19509904]

約数ペア:

[(1, 19509904), (2, 9754952), (4, 4877476), (8, 2438738), (16, 1219369), (211, 92464), (422, 46232), (844, 23116), (1688, 11558), (3376, 5779)]