28905981

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{23909}}^1$

素因数の和:23956

約数の個数: 16

約数和(自身を含む): 42846720

約数和(自身を除く): 13940739

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 23909, 71727, 310817, 741179, 932451, 2223537, 9635327, 28905981]

約数ペア:

[(1, 28905981), (3, 9635327), (13, 2223537), (31, 932451), (39, 741179), (93, 310817), (403, 71727), (1209, 23909)]