28070811

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{821}}^1$

素因数の和:987

約数の個数: 24

約数和(自身を含む): 42316560

約数和(自身を除く): 14245749

約数列:

[1, 3, 9, 29, 87, 131, 261, 393, 821, 1179, 2463, 3799, 7389, 11397, 23809, 34191, 71427, 107551, 214281, 322653, 967959, 3118979, 9356937, 28070811]

約数ペア:

[(1, 28070811), (3, 9356937), (9, 3118979), (29, 967959), (87, 322653), (131, 214281), (261, 107551), (393, 71427), (821, 34191), (1179, 23809), (2463, 11397), (3799, 7389)]