21521721

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{23993}}^1$

素因数の和:24032

約数の個数: 16

約数和(自身を含む): 32247936

約数和(自身を除く): 10726215

約数列:

[1, 3, 13, 23, 39, 69, 299, 897, 23993, 71979, 311909, 551839, 935727, 1655517, 7173907, 21521721]

約数ペア:

[(1, 21521721), (3, 7173907), (13, 1655517), (23, 935727), (39, 551839), (69, 311909), (299, 71979), (897, 23993)]