21781330209

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{337021}}^1$

素因数の和:337237

約数の個数: 24

約数和(自身を含む): 32386466112

約数和(自身を除く): 10605135903

約数列:

[1, 3, 9, 43, 129, 167, 387, 501, 1503, 7181, 21543, 64629, 337021, 1011063, 3033189, 14491903, 43475709, 56282507, 130427127, 168847521, 506542563, 2420147801, 7260443403, 21781330209]

約数ペア:

[(1, 21781330209), (3, 7260443403), (9, 2420147801), (43, 506542563), (129, 168847521), (167, 130427127), (387, 56282507), (501, 43475709), (1503, 14491903), (7181, 3033189), (21543, 1011063), (64629, 337021)]