261337856

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4133}}^1$

素因数の和:4181

約数の個数: 72

約数和(自身を含む): 591492720

約数和(自身を除く): 330154864

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 128, 152, 208, 247, 256, 304, 416, 494, 608, 832, 988, 1216, 1664, 1976, 2432, 3328, 3952, 4133, 4864, 7904, 8266, 15808, 16532, 31616, 33064, 53729, 63232, 66128, 78527, 107458, 132256, 157054, 214916, 264512, 314108, 429832, 529024, 628216, 859664, 1020851, 1058048, 1256432, 1719328, 2041702, 2512864, 3438656, 4083404, 5025728, 6877312, 8166808, 10051456, 13754624, 16333616, 20102912, 32667232, 65334464, 130668928, 261337856]

約数ペア:

[(1, 261337856), (2, 130668928), (4, 65334464), (8, 32667232), (13, 20102912), (16, 16333616), (19, 13754624), (26, 10051456), (32, 8166808), (38, 6877312), (52, 5025728), (64, 4083404), (76, 3438656), (104, 2512864), (128, 2041702), (152, 1719328), (208, 1256432), (247, 1058048), (256, 1020851), (304, 859664), (416, 628216), (494, 529024), (608, 429832), (832, 314108), (988, 264512), (1216, 214916), (1664, 157054), (1976, 132256), (2432, 107458), (3328, 78527), (3952, 66128), (4133, 63232), (4864, 53729), (7904, 33064), (8266, 31616), (15808, 16532)]