7720137

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 12240000

約数和(自身を除く): 4519863

約数列:

[1, 3, 9, 19, 27, 57, 101, 149, 171, 303, 447, 513, 909, 1341, 1919, 2727, 2831, 4023, 5757, 8493, 15049, 17271, 25479, 45147, 51813, 76437, 135441, 285931, 406323, 857793, 2573379, 7720137]

約数ペア:

[(1, 7720137), (3, 2573379), (9, 857793), (19, 406323), (27, 285931), (57, 135441), (101, 76437), (149, 51813), (171, 45147), (303, 25479), (447, 17271), (513, 15049), (909, 8493), (1341, 5757), (1919, 4023), (2727, 2831)]