21912579

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{383}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 35266560

約数和(自身を除く): 13353981

約数列:

[1, 3, 9, 13, 27, 39, 117, 163, 351, 383, 489, 1149, 1467, 2119, 3447, 4401, 4979, 6357, 10341, 14937, 19071, 44811, 57213, 62429, 134433, 187287, 561861, 811577, 1685583, 2434731, 7304193, 21912579]

約数ペア:

[(1, 21912579), (3, 7304193), (9, 2434731), (13, 1685583), (27, 811577), (39, 561861), (117, 187287), (163, 134433), (351, 62429), (383, 57213), (489, 44811), (1149, 19071), (1467, 14937), (2119, 10341), (3447, 6357), (4401, 4979)]