20653521

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{57853}}^1$

素因数の和:57880

約数の個数: 16

約数和(自身を含む): 33323904

約数和(自身を除く): 12670383

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 57853, 173559, 404971, 983501, 1214913, 2950503, 6884507, 20653521]

約数ペア:

[(1, 20653521), (3, 6884507), (7, 2950503), (17, 1214913), (21, 983501), (51, 404971), (119, 173559), (357, 57853)]