21327272

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{727}}^1$

素因数の和:945

約数の個数: 32

約数和(自身を含む): 42369600

約数和(自身を除く): 21042328

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 193, 386, 727, 772, 1454, 1544, 2908, 3667, 5816, 7334, 13813, 14668, 27626, 29336, 55252, 110504, 140311, 280622, 561244, 1122488, 2665909, 5331818, 10663636, 21327272]

約数ペア:

[(1, 21327272), (2, 10663636), (4, 5331818), (8, 2665909), (19, 1122488), (38, 561244), (76, 280622), (152, 140311), (193, 110504), (386, 55252), (727, 29336), (772, 27626), (1454, 14668), (1544, 13813), (2908, 7334), (3667, 5816)]