778888971

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1\times {\mathrm{907}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 1321292544

約数和(自身を除く): 542403573

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 317, 387, 903, 907, 951, 2219, 2709, 2721, 2853, 6349, 6657, 8163, 13631, 19047, 19971, 39001, 40893, 57141, 95417, 117003, 122679, 273007, 286251, 287519, 351009, 819021, 858753, 862557, 2012633, 2457063, 2587671, 6037899, 12363317, 18113697, 37089951, 86543219, 111269853, 259629657, 778888971]

約数ペア:

[(1, 778888971), (3, 259629657), (7, 111269853), (9, 86543219), (21, 37089951), (43, 18113697), (63, 12363317), (129, 6037899), (301, 2587671), (317, 2457063), (387, 2012633), (903, 862557), (907, 858753), (951, 819021), (2219, 351009), (2709, 287519), (2721, 286251), (2853, 273007), (6349, 122679), (6657, 117003), (8163, 95417), (13631, 57141), (19047, 40893), (19971, 39001)]