12971780

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{5107}}^1$

素因数の和:5243

約数の個数: 24

約数和(自身を含む): 27460608

約数和(自身を除く): 14488828

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 5107, 10214, 20428, 25535, 51070, 102140, 648589, 1297178, 2594356, 3242945, 6485890, 12971780]

約数ペア:

[(1, 12971780), (2, 6485890), (4, 3242945), (5, 2594356), (10, 1297178), (20, 648589), (127, 102140), (254, 51070), (508, 25535), (635, 20428), (1270, 10214), (2540, 5107)]