81674415

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42209}}^1$

素因数の和:42263

約数の個数: 24

約数和(自身を含む): 144864720

約数和(自身を除く): 63190305

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 42209, 126627, 211045, 379881, 633135, 1814987, 1899405, 5444961, 9074935, 16334883, 27224805, 81674415]

約数ペア:

[(1, 81674415), (3, 27224805), (5, 16334883), (9, 9074935), (15, 5444961), (43, 1899405), (45, 1814987), (129, 633135), (215, 379881), (387, 211045), (645, 126627), (1935, 42209)]