20993917

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{6863}}^1$

素因数の和:6912

約数の個数: 16

約数和(自身を含む): 26357760

約数和(自身を除く): 5363843

約数列:

[1, 7, 19, 23, 133, 161, 437, 3059, 6863, 48041, 130397, 157849, 912779, 1104943, 2999131, 20993917]

約数ペア:

[(1, 20993917), (7, 2999131), (19, 1104943), (23, 912779), (133, 157849), (161, 130397), (437, 48041), (3059, 6863)]