81242245

素因数分解:

$5^1\times 7^2\times {\mathrm{223}}^1\times {\mathrm{1487}}^1$

素因数の和:1729

約数の個数: 24

約数和(自身を含む): 113992704

約数和(自身を除く): 32750459

約数列:

[1, 5, 7, 35, 49, 223, 245, 1115, 1487, 1561, 7435, 7805, 10409, 10927, 52045, 54635, 72863, 331601, 364315, 1658005, 2321207, 11606035, 16248449, 81242245]

約数ペア:

[(1, 81242245), (5, 16248449), (7, 11606035), (35, 2321207), (49, 1658005), (223, 364315), (245, 331601), (1115, 72863), (1487, 54635), (1561, 52045), (7435, 10927), (7805, 10409)]