280228720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1723}}^1$

素因数の和:1862

約数の個数: 80

約数和(自身を含む): 692634240

約数和(自身を除く): 412405520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 107, 152, 190, 214, 304, 380, 428, 535, 760, 856, 1070, 1520, 1712, 1723, 2033, 2140, 3446, 4066, 4280, 6892, 8132, 8560, 8615, 10165, 13784, 16264, 17230, 20330, 27568, 32528, 32737, 34460, 40660, 65474, 68920, 81320, 130948, 137840, 162640, 163685, 184361, 261896, 327370, 368722, 523792, 654740, 737444, 921805, 1309480, 1474888, 1843610, 2618960, 2949776, 3502859, 3687220, 7005718, 7374440, 14011436, 14748880, 17514295, 28022872, 35028590, 56045744, 70057180, 140114360, 280228720]

約数ペア:

[(1, 280228720), (2, 140114360), (4, 70057180), (5, 56045744), (8, 35028590), (10, 28022872), (16, 17514295), (19, 14748880), (20, 14011436), (38, 7374440), (40, 7005718), (76, 3687220), (80, 3502859), (95, 2949776), (107, 2618960), (152, 1843610), (190, 1474888), (214, 1309480), (304, 921805), (380, 737444), (428, 654740), (535, 523792), (760, 368722), (856, 327370), (1070, 261896), (1520, 184361), (1712, 163685), (1723, 162640), (2033, 137840), (2140, 130948), (3446, 81320), (4066, 68920), (4280, 65474), (6892, 40660), (8132, 34460), (8560, 32737), (8615, 32528), (10165, 27568), (13784, 20330), (16264, 17230)]