28685380

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21407}}^1$

素因数の和:21483

約数の個数: 24

約数和(自身を含む): 61141248

約数和(自身を除く): 32455868

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21407, 42814, 85628, 107035, 214070, 428140, 1434269, 2868538, 5737076, 7171345, 14342690, 28685380]

約数ペア:

[(1, 28685380), (2, 14342690), (4, 7171345), (5, 5737076), (10, 2868538), (20, 1434269), (67, 428140), (134, 214070), (268, 107035), (335, 85628), (670, 42814), (1340, 21407)]