81305980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{580757}}^1$

素因数の和:580773

約数の個数: 24

約数和(自身を含む): 195134688

約数和(自身を除く): 113828708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 580757, 1161514, 2323028, 2903785, 4065299, 5807570, 8130598, 11615140, 16261196, 20326495, 40652990, 81305980]

約数ペア:

[(1, 81305980), (2, 40652990), (4, 20326495), (5, 16261196), (7, 11615140), (10, 8130598), (14, 5807570), (20, 4065299), (28, 2903785), (35, 2323028), (70, 1161514), (140, 580757)]