28154740

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21011}}^1$

素因数の和:21087

約数の個数: 24

約数和(自身を含む): 60010272

約数和(自身を除く): 31855532

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21011, 42022, 84044, 105055, 210110, 420220, 1407737, 2815474, 5630948, 7038685, 14077370, 28154740]

約数ペア:

[(1, 28154740), (2, 14077370), (4, 7038685), (5, 5630948), (10, 2815474), (20, 1407737), (67, 420220), (134, 210110), (268, 105055), (335, 84044), (670, 42022), (1340, 21011)]