27928971

素因数分解:

$3^2\times 7^2\times {\mathrm{63331}}^1$

素因数の和:63351

約数の個数: 18

約数和(自身を含む): 46929012

約数和(自身を除く): 19000041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 63331, 189993, 443317, 569979, 1329951, 3103219, 3989853, 9309657, 27928971]

約数ペア:

[(1, 27928971), (3, 9309657), (7, 3989853), (9, 3103219), (21, 1329951), (49, 569979), (63, 443317), (147, 189993), (441, 63331)]