1218147

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 32

約数和(自身を含む): 2027520

約数和(自身を除く): 809373

約数列:

[1, 3, 7, 19, 21, 43, 57, 71, 129, 133, 213, 301, 399, 497, 817, 903, 1349, 1491, 2451, 3053, 4047, 5719, 9159, 9443, 17157, 21371, 28329, 58007, 64113, 174021, 406049, 1218147]

約数ペア:

[(1, 1218147), (3, 406049), (7, 174021), (19, 64113), (21, 58007), (43, 28329), (57, 21371), (71, 17157), (129, 9443), (133, 9159), (213, 5719), (301, 4047), (399, 3053), (497, 2451), (817, 1491), (903, 1349)]