263680

素因数分解:

$2^9\times 5^1\times {\mathrm{103}}^1$

素因数の和:126

約数の個数: 40

約数和(自身を含む): 638352

約数和(自身を除く): 374672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 256, 320, 412, 512, 515, 640, 824, 1030, 1280, 1648, 2060, 2560, 3296, 4120, 6592, 8240, 13184, 16480, 26368, 32960, 52736, 65920, 131840, 263680]

約数ペア:

[(1, 263680), (2, 131840), (4, 65920), (5, 52736), (8, 32960), (10, 26368), (16, 16480), (20, 13184), (32, 8240), (40, 6592), (64, 4120), (80, 3296), (103, 2560), (128, 2060), (160, 1648), (206, 1280), (256, 1030), (320, 824), (412, 640), (512, 515)]