21619389

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 32845824

約数和(自身を除く): 11226435

約数列:

[1, 3, 11, 33, 47, 53, 141, 159, 263, 517, 583, 789, 1551, 1749, 2491, 2893, 7473, 8679, 12361, 13939, 27401, 37083, 41817, 82203, 135971, 153329, 407913, 459987, 655133, 1965399, 7206463, 21619389]

約数ペア:

[(1, 21619389), (3, 7206463), (11, 1965399), (33, 655133), (47, 459987), (53, 407913), (141, 153329), (159, 135971), (263, 82203), (517, 41817), (583, 37083), (789, 27401), (1551, 13939), (1749, 12361), (2491, 8679), (2893, 7473)]