78838340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{563131}}^1$

素因数の和:563147

約数の個数: 24

約数和(自身を含む): 189212352

約数和(自身を除く): 110374012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 563131, 1126262, 2252524, 2815655, 3941917, 5631310, 7883834, 11262620, 15767668, 19709585, 39419170, 78838340]

約数ペア:

[(1, 78838340), (2, 39419170), (4, 19709585), (5, 15767668), (7, 11262620), (10, 7883834), (14, 5631310), (20, 3941917), (28, 2815655), (35, 2252524), (70, 1126262), (140, 563131)]