20709451

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:423

約数の個数: 24

約数和(自身を含む): 26082720

約数和(自身を除く): 5373269

約数列:

[1, 7, 17, 29, 119, 203, 289, 353, 493, 2023, 2471, 3451, 6001, 8381, 10237, 42007, 58667, 71659, 102017, 174029, 714119, 1218203, 2958493, 20709451]

約数ペア:

[(1, 20709451), (7, 2958493), (17, 1218203), (29, 714119), (119, 174029), (203, 102017), (289, 71659), (353, 58667), (493, 42007), (2023, 10237), (2471, 8381), (3451, 6001)]