638577920

素因数分解:

$2^8\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9413}}^1$

素因数の和:9487

約数の個数: 72

約数和(自身を含む): 1558619496

約数和(自身を除く): 920041576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 256, 265, 320, 424, 530, 640, 848, 1060, 1280, 1696, 2120, 3392, 4240, 6784, 8480, 9413, 13568, 16960, 18826, 33920, 37652, 47065, 67840, 75304, 94130, 150608, 188260, 301216, 376520, 498889, 602432, 753040, 997778, 1204864, 1506080, 1995556, 2409728, 2494445, 3012160, 3991112, 4988890, 6024320, 7982224, 9977780, 12048640, 15964448, 19955560, 31928896, 39911120, 63857792, 79822240, 127715584, 159644480, 319288960, 638577920]

約数ペア:

[(1, 638577920), (2, 319288960), (4, 159644480), (5, 127715584), (8, 79822240), (10, 63857792), (16, 39911120), (20, 31928896), (32, 19955560), (40, 15964448), (53, 12048640), (64, 9977780), (80, 7982224), (106, 6024320), (128, 4988890), (160, 3991112), (212, 3012160), (256, 2494445), (265, 2409728), (320, 1995556), (424, 1506080), (530, 1204864), (640, 997778), (848, 753040), (1060, 602432), (1280, 498889), (1696, 376520), (2120, 301216), (3392, 188260), (4240, 150608), (6784, 94130), (8480, 75304), (9413, 67840), (13568, 47065), (16960, 37652), (18826, 33920)]