208572020

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{20899}}^1$

素因数の和:21407

約数の個数: 24

約数和(自身を含む): 438900000

約数和(自身を除く): 230327980

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 9980, 20899, 41798, 83596, 104495, 208990, 417980, 10428601, 20857202, 41714404, 52143005, 104286010, 208572020]

約数ペア:

[(1, 208572020), (2, 104286010), (4, 52143005), (5, 41714404), (10, 20857202), (20, 10428601), (499, 417980), (998, 208990), (1996, 104495), (2495, 83596), (4990, 41798), (9980, 20899)]