261404080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{577}}^1\times {\mathrm{809}}^1$

素因数の和:1406

約数の個数: 80

約数和(自身を含む): 696651840

約数和(自身を除く): 435247760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 577, 809, 1154, 1618, 2308, 2885, 3236, 4039, 4045, 4616, 5663, 5770, 6472, 8078, 8090, 9232, 11326, 11540, 12944, 16156, 16180, 20195, 22652, 23080, 28315, 32312, 32360, 40390, 45304, 46160, 56630, 64624, 64720, 80780, 90608, 113260, 161560, 226520, 323120, 453040, 466793, 933586, 1867172, 2333965, 3267551, 3734344, 4667930, 6535102, 7468688, 9335860, 13070204, 16337755, 18671720, 26140408, 32675510, 37343440, 52280816, 65351020, 130702040, 261404080]

約数ペア:

[(1, 261404080), (2, 130702040), (4, 65351020), (5, 52280816), (7, 37343440), (8, 32675510), (10, 26140408), (14, 18671720), (16, 16337755), (20, 13070204), (28, 9335860), (35, 7468688), (40, 6535102), (56, 4667930), (70, 3734344), (80, 3267551), (112, 2333965), (140, 1867172), (280, 933586), (560, 466793), (577, 453040), (809, 323120), (1154, 226520), (1618, 161560), (2308, 113260), (2885, 90608), (3236, 80780), (4039, 64720), (4045, 64624), (4616, 56630), (5663, 46160), (5770, 45304), (6472, 40390), (8078, 32360), (8090, 32312), (9232, 28315), (11326, 23080), (11540, 22652), (12944, 20195), (16156, 16180)]