21864817

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{347}}^1$

素因数の和:528

約数の個数: 16

約数和(自身を含む): 24437952

約数和(自身を除く): 2573135

約数列:

[1, 13, 37, 131, 347, 481, 1703, 4511, 4847, 12839, 45457, 63011, 166907, 590941, 1681909, 21864817]

約数ペア:

[(1, 21864817), (13, 1681909), (37, 590941), (131, 166907), (347, 63011), (481, 45457), (1703, 12839), (4511, 4847)]