21493901

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 5359219

約数列:

[1, 11, 13, 29, 71, 73, 143, 319, 377, 781, 803, 923, 949, 2059, 2117, 4147, 5183, 10153, 10439, 22649, 23287, 26767, 27521, 57013, 67379, 150307, 294437, 302731, 741169, 1653377, 1953991, 21493901]

約数ペア:

[(1, 21493901), (11, 1953991), (13, 1653377), (29, 741169), (71, 302731), (73, 294437), (143, 150307), (319, 67379), (377, 57013), (781, 27521), (803, 26767), (923, 23287), (949, 22649), (2059, 10439), (2117, 10153), (4147, 5183)]