128427561

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{379}}^1\times {\mathrm{1637}}^1$

素因数の和:2045

約数の個数: 24

約数和(自身を含む): 194201280

約数和(自身を除く): 65773719

約数列:

[1, 3, 9, 23, 69, 207, 379, 1137, 1637, 3411, 4911, 8717, 14733, 26151, 37651, 78453, 112953, 338859, 620423, 1861269, 5583807, 14269729, 42809187, 128427561]

約数ペア:

[(1, 128427561), (3, 42809187), (9, 14269729), (23, 5583807), (69, 1861269), (207, 620423), (379, 338859), (1137, 112953), (1637, 78453), (3411, 37651), (4911, 26151), (8717, 14733)]