16820020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{379}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 40602240

約数和(自身を除く): 23782220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 379, 634, 758, 1268, 1516, 1585, 1895, 2219, 2653, 3170, 3790, 4438, 5306, 6340, 7580, 8876, 10612, 11095, 13265, 22190, 26530, 44380, 53060, 120143, 240286, 480572, 600715, 841001, 1201430, 1682002, 2402860, 3364004, 4205005, 8410010, 16820020]

約数ペア:

[(1, 16820020), (2, 8410010), (4, 4205005), (5, 3364004), (7, 2402860), (10, 1682002), (14, 1201430), (20, 841001), (28, 600715), (35, 480572), (70, 240286), (140, 120143), (317, 53060), (379, 44380), (634, 26530), (758, 22190), (1268, 13265), (1516, 11095), (1585, 10612), (1895, 8876), (2219, 7580), (2653, 6340), (3170, 5306), (3790, 4438)]