28054509

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{1373}}^1$

素因数の和:1529

約数の個数: 24

約数和(自身を含む): 43858080

約数和(自身を除く): 15803571

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 1373, 2919, 4119, 6811, 9611, 20433, 28833, 67277, 190847, 201831, 572541, 1335929, 4007787, 9351503, 28054509]

約数ペア:

[(1, 28054509), (3, 9351503), (7, 4007787), (21, 1335929), (49, 572541), (139, 201831), (147, 190847), (417, 67277), (973, 28833), (1373, 20433), (2919, 9611), (4119, 6811)]