28211677940

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21053491}}^1$

素因数の和:21053567

約数の個数: 24

約数和(自身を含む): 60128773152

約数和(自身を除く): 31917095212

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21053491, 42106982, 84213964, 105267455, 210534910, 421069820, 1410583897, 2821167794, 5642335588, 7052919485, 14105838970, 28211677940]

約数ペア:

[(1, 28211677940), (2, 14105838970), (4, 7052919485), (5, 5642335588), (10, 2821167794), (20, 1410583897), (67, 421069820), (134, 210534910), (268, 105267455), (335, 84213964), (670, 42106982), (1340, 21053491)]