21720793809

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{50631221}}^1$

素因数の和:50631248

約数の個数: 16

約数和(自身を含む): 34024181184

約数和(自身を除く): 12303387375

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 50631221, 151893663, 556943431, 658205873, 1670830293, 1974617619, 7240264603, 21720793809]

約数ペア:

[(1, 21720793809), (3, 7240264603), (11, 1974617619), (13, 1670830293), (33, 658205873), (39, 556943431), (143, 151893663), (429, 50631221)]