256537440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{178151}}^1$

素因数の和:178172

約数の個数: 72

約数和(自身を含む): 875438928

約数和(自身を除く): 618901488

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 178151, 356302, 534453, 712604, 890755, 1068906, 1425208, 1603359, 1781510, 2137812, 2672265, 2850416, 3206718, 3563020, 4275624, 5344530, 5700832, 6413436, 7126040, 8016795, 8551248, 10689060, 12826872, 14252080, 16033590, 17102496, 21378120, 25653744, 28504160, 32067180, 42756240, 51307488, 64134360, 85512480, 128268720, 256537440]

約数ペア:

[(1, 256537440), (2, 128268720), (3, 85512480), (4, 64134360), (5, 51307488), (6, 42756240), (8, 32067180), (9, 28504160), (10, 25653744), (12, 21378120), (15, 17102496), (16, 16033590), (18, 14252080), (20, 12826872), (24, 10689060), (30, 8551248), (32, 8016795), (36, 7126040), (40, 6413436), (45, 5700832), (48, 5344530), (60, 4275624), (72, 3563020), (80, 3206718), (90, 2850416), (96, 2672265), (120, 2137812), (144, 1781510), (160, 1603359), (180, 1425208), (240, 1068906), (288, 890755), (360, 712604), (480, 534453), (720, 356302), (1440, 178151)]