221380209

素因数分解:

$3^4\times {\mathrm{463}}^1\times {\mathrm{5903}}^1$

素因数の和:6378

約数の個数: 20

約数和(自身を含む): 331474176

約数和(自身を除く): 110093967

約数列:

[1, 3, 9, 27, 81, 463, 1389, 4167, 5903, 12501, 17709, 37503, 53127, 159381, 478143, 2733089, 8199267, 24597801, 73793403, 221380209]

約数ペア:

[(1, 221380209), (3, 73793403), (9, 24597801), (27, 8199267), (81, 2733089), (463, 478143), (1389, 159381), (4167, 53127), (5903, 37503), (12501, 17709)]