81258316

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{21139}}^1$

素因数の和:21205

約数の個数: 18

約数和(自身を含む): 146944140

約数和(自身を除く): 65685824

約数列:

[1, 2, 4, 31, 62, 124, 961, 1922, 3844, 21139, 42278, 84556, 655309, 1310618, 2621236, 20314579, 40629158, 81258316]

約数ペア:

[(1, 81258316), (2, 40629158), (4, 20314579), (31, 2621236), (62, 1310618), (124, 655309), (961, 84556), (1922, 42278), (3844, 21139)]