19853487

素因数分解:

$3^2\times {\mathrm{29}}^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:168

約数の個数: 36

約数和(自身を含む): 30889144

約数和(自身を除く): 11035657

約数列:

[1, 3, 9, 29, 43, 61, 87, 129, 183, 261, 387, 549, 841, 1247, 1769, 2523, 2623, 3741, 5307, 7569, 7869, 11223, 15921, 23607, 36163, 51301, 76067, 108489, 153903, 228201, 325467, 461709, 684603, 2205943, 6617829, 19853487]

約数ペア:

[(1, 19853487), (3, 6617829), (9, 2205943), (29, 684603), (43, 461709), (61, 325467), (87, 228201), (129, 153903), (183, 108489), (261, 76067), (387, 51301), (549, 36163), (841, 23607), (1247, 15921), (1769, 11223), (2523, 7869), (2623, 7569), (3741, 5307)]