21784802

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15809}}^1$

素因数の和:15877

約数の個数: 16

約数和(自身を含む): 35857080

約数和(自身を除く): 14072278

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 15809, 31618, 205517, 411034, 837877, 1675754, 10892401, 21784802]

約数ペア:

[(1, 21784802), (2, 10892401), (13, 1675754), (26, 837877), (53, 411034), (106, 205517), (689, 31618), (1378, 15809)]