21026863

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 5584337

約数列:

[1, 11, 13, 19, 71, 109, 143, 209, 247, 781, 923, 1199, 1349, 1417, 2071, 2717, 7739, 10153, 14839, 15587, 17537, 22781, 26923, 85129, 100607, 147041, 192907, 296153, 1106677, 1617451, 1911533, 21026863]

約数ペア:

[(1, 21026863), (11, 1911533), (13, 1617451), (19, 1106677), (71, 296153), (109, 192907), (143, 147041), (209, 100607), (247, 85129), (781, 26923), (923, 22781), (1199, 17537), (1349, 15587), (1417, 14839), (2071, 10153), (2717, 7739)]