18916001

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 22223520

約数和(自身を除く): 3307519

約数列:

[1, 13, 19, 43, 137, 169, 247, 559, 817, 1781, 2603, 3211, 5891, 7267, 10621, 23153, 33839, 76583, 111929, 138073, 439907, 995579, 1455077, 18916001]

約数ペア:

[(1, 18916001), (13, 1455077), (19, 995579), (43, 439907), (137, 138073), (169, 111929), (247, 76583), (559, 33839), (817, 23153), (1781, 10621), (2603, 7267), (3211, 5891)]