20511428

素因数分解:

$2^2\times 7^1\times {\mathrm{349}}^1\times {\mathrm{2099}}^1$

素因数の和:2459

約数の個数: 24

約数和(自身を含む): 41160000

約数和(自身を除く): 20648572

約数列:

[1, 2, 4, 7, 14, 28, 349, 698, 1396, 2099, 2443, 4198, 4886, 8396, 9772, 14693, 29386, 58772, 732551, 1465102, 2930204, 5127857, 10255714, 20511428]

約数ペア:

[(1, 20511428), (2, 10255714), (4, 5127857), (7, 2930204), (14, 1465102), (28, 732551), (349, 58772), (698, 29386), (1396, 14693), (2099, 9772), (2443, 8396), (4198, 4886)]