81225644

素因数分解:

$2^2\times {\mathrm{127}}^2\times {\mathrm{1259}}^1$

素因数の和:1517

約数の個数: 18

約数和(自身を含む): 143386740

約数和(自身を除く): 62161096

約数列:

[1, 2, 4, 127, 254, 508, 1259, 2518, 5036, 16129, 32258, 64516, 159893, 319786, 639572, 20306411, 40612822, 81225644]

約数ペア:

[(1, 81225644), (2, 40612822), (4, 20306411), (127, 639572), (254, 319786), (508, 159893), (1259, 64516), (2518, 32258), (5036, 16129)]