20608040

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5101}}^1$

素因数の和:5213

約数の個数: 32

約数和(自身を含む): 46836360

約数和(自身を除く): 26228320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5101, 10202, 20404, 25505, 40808, 51010, 102020, 204040, 515201, 1030402, 2060804, 2576005, 4121608, 5152010, 10304020, 20608040]

約数ペア:

[(1, 20608040), (2, 10304020), (4, 5152010), (5, 4121608), (8, 2576005), (10, 2060804), (20, 1030402), (40, 515201), (101, 204040), (202, 102020), (404, 51010), (505, 40808), (808, 25505), (1010, 20404), (2020, 10202), (4040, 5101)]