18785109

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 11019435

約数列:

[1, 3, 7, 21, 43, 71, 129, 213, 293, 301, 497, 879, 903, 1491, 2051, 3053, 6153, 9159, 12599, 20803, 21371, 37797, 62409, 64113, 88193, 145621, 264579, 436863, 894529, 2683587, 6261703, 18785109]

約数ペア:

[(1, 18785109), (3, 6261703), (7, 2683587), (21, 894529), (43, 436863), (71, 264579), (129, 145621), (213, 88193), (293, 64113), (301, 62409), (497, 37797), (879, 21371), (903, 20803), (1491, 12599), (2051, 9159), (3053, 6153)]