16920880

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{823}}^1$

素因数の和:1093

約数の個数: 40

約数和(自身を含む): 39542112

約数和(自身を除く): 22621232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 823, 1028, 1285, 1646, 2056, 2570, 3292, 4112, 4115, 5140, 6584, 8230, 10280, 13168, 16460, 20560, 32920, 65840, 211511, 423022, 846044, 1057555, 1692088, 2115110, 3384176, 4230220, 8460440, 16920880]

約数ペア:

[(1, 16920880), (2, 8460440), (4, 4230220), (5, 3384176), (8, 2115110), (10, 1692088), (16, 1057555), (20, 846044), (40, 423022), (80, 211511), (257, 65840), (514, 32920), (823, 20560), (1028, 16460), (1285, 13168), (1646, 10280), (2056, 8230), (2570, 6584), (3292, 5140), (4112, 4115)]