28071428

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91141}}^1$

素因数の和:91163

約数の個数: 24

約数和(自身を含む): 61247424

約数和(自身を除く): 33175996

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 91141, 182282, 364564, 637987, 1002551, 1275974, 2005102, 2551948, 4010204, 7017857, 14035714, 28071428]

約数ペア:

[(1, 28071428), (2, 14035714), (4, 7017857), (7, 4010204), (11, 2551948), (14, 2005102), (22, 1275974), (28, 1002551), (44, 637987), (77, 364564), (154, 182282), (308, 91141)]