20199696741

素因数分解:

$3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{645131}}^1$

素因数の和:645222

約数の個数: 36

約数和(自身を含む): 34419082464

約数和(自身を除く): 14219385723

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 147, 213, 441, 497, 639, 1491, 3479, 4473, 10437, 31311, 645131, 1935393, 4515917, 5806179, 13547751, 31611419, 40643253, 45804301, 94834257, 137412903, 284502771, 320630107, 412238709, 961890321, 2244410749, 2885670963, 6733232247, 20199696741]

約数ペア:

[(1, 20199696741), (3, 6733232247), (7, 2885670963), (9, 2244410749), (21, 961890321), (49, 412238709), (63, 320630107), (71, 284502771), (147, 137412903), (213, 94834257), (441, 45804301), (497, 40643253), (639, 31611419), (1491, 13547751), (3479, 5806179), (4473, 4515917), (10437, 1935393), (31311, 645131)]