2666440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:214

約数の個数: 64

約数和(自身を含む): 6998400

約数和(自身を除く): 4331960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 107, 140, 178, 214, 280, 356, 428, 445, 535, 623, 712, 749, 856, 890, 1070, 1246, 1498, 1780, 2140, 2492, 2996, 3115, 3560, 3745, 4280, 4984, 5992, 6230, 7490, 9523, 12460, 14980, 19046, 24920, 29960, 38092, 47615, 66661, 76184, 95230, 133322, 190460, 266644, 333305, 380920, 533288, 666610, 1333220, 2666440]

約数ペア:

[(1, 2666440), (2, 1333220), (4, 666610), (5, 533288), (7, 380920), (8, 333305), (10, 266644), (14, 190460), (20, 133322), (28, 95230), (35, 76184), (40, 66661), (56, 47615), (70, 38092), (89, 29960), (107, 24920), (140, 19046), (178, 14980), (214, 12460), (280, 9523), (356, 7490), (428, 6230), (445, 5992), (535, 4984), (623, 4280), (712, 3745), (749, 3560), (856, 3115), (890, 2996), (1070, 2492), (1246, 2140), (1498, 1780)]