81521315

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{11621}}^1$

素因数の和:11710

約数の個数: 16

約数和(自身を含む): 103761216

約数和(自身を除く): 22239901

約数列:

[1, 5, 23, 61, 115, 305, 1403, 7015, 11621, 58105, 267283, 708881, 1336415, 3544405, 16304263, 81521315]

約数ペア:

[(1, 81521315), (5, 16304263), (23, 3544405), (61, 1336415), (115, 708881), (305, 267283), (1403, 58105), (7015, 11621)]