640587136

素因数分解:

$2^7\times 7^1\times {\mathrm{523}}^1\times {\mathrm{1367}}^1$

素因数の和:1911

約数の個数: 64

約数和(自身を含む): 1462337280

約数和(自身を除く): 821750144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 448, 523, 896, 1046, 1367, 2092, 2734, 3661, 4184, 5468, 7322, 8368, 9569, 10936, 14644, 16736, 19138, 21872, 29288, 33472, 38276, 43744, 58576, 66944, 76552, 87488, 117152, 153104, 174976, 234304, 306208, 468608, 612416, 714941, 1224832, 1429882, 2859764, 5004587, 5719528, 10009174, 11439056, 20018348, 22878112, 40036696, 45756224, 80073392, 91512448, 160146784, 320293568, 640587136]

約数ペア:

[(1, 640587136), (2, 320293568), (4, 160146784), (7, 91512448), (8, 80073392), (14, 45756224), (16, 40036696), (28, 22878112), (32, 20018348), (56, 11439056), (64, 10009174), (112, 5719528), (128, 5004587), (224, 2859764), (448, 1429882), (523, 1224832), (896, 714941), (1046, 612416), (1367, 468608), (2092, 306208), (2734, 234304), (3661, 174976), (4184, 153104), (5468, 117152), (7322, 87488), (8368, 76552), (9569, 66944), (10936, 58576), (14644, 43744), (16736, 38276), (19138, 33472), (21872, 29288)]