81191540

素因数分解:

$2^2\times 5^1\times {\mathrm{1151}}^1\times {\mathrm{3527}}^1$

素因数の和:4687

約数の個数: 24

約数和(自身を含む): 170698752

約数和(自身を除く): 89507212

約数列:

[1, 2, 4, 5, 10, 20, 1151, 2302, 3527, 4604, 5755, 7054, 11510, 14108, 17635, 23020, 35270, 70540, 4059577, 8119154, 16238308, 20297885, 40595770, 81191540]

約数ペア:

[(1, 81191540), (2, 40595770), (4, 20297885), (5, 16238308), (10, 8119154), (20, 4059577), (1151, 70540), (2302, 35270), (3527, 23020), (4604, 17635), (5755, 14108), (7054, 11510)]