81857721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{42043}}^1$

素因数の和:42116

約数の個数: 16

約数和(自身を含む): 121086720

約数和(自身を除く): 39228999

約数列:

[1, 3, 11, 33, 59, 177, 649, 1947, 42043, 126129, 462473, 1387419, 2480537, 7441611, 27285907, 81857721]

約数ペア:

[(1, 81857721), (3, 27285907), (11, 7441611), (33, 2480537), (59, 1387419), (177, 462473), (649, 126129), (1947, 42043)]