256420878

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{1051}}^1$

素因数の和:1257

約数の個数: 64

約数和(自身を含む): 606355968

約数和(自身を除く): 349935090

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 74, 111, 157, 222, 259, 314, 471, 518, 777, 942, 1051, 1099, 1554, 2102, 2198, 3153, 3297, 5809, 6306, 6594, 7357, 11618, 14714, 17427, 22071, 34854, 38887, 40663, 44142, 77774, 81326, 116661, 121989, 165007, 233322, 243978, 272209, 330014, 495021, 544418, 816627, 990042, 1155049, 1633254, 2310098, 3465147, 6105259, 6930294, 12210518, 18315777, 36631554, 42736813, 85473626, 128210439, 256420878]

約数ペア:

[(1, 256420878), (2, 128210439), (3, 85473626), (6, 42736813), (7, 36631554), (14, 18315777), (21, 12210518), (37, 6930294), (42, 6105259), (74, 3465147), (111, 2310098), (157, 1633254), (222, 1155049), (259, 990042), (314, 816627), (471, 544418), (518, 495021), (777, 330014), (942, 272209), (1051, 243978), (1099, 233322), (1554, 165007), (2102, 121989), (2198, 116661), (3153, 81326), (3297, 77774), (5809, 44142), (6306, 40663), (6594, 38887), (7357, 34854), (11618, 22071), (14714, 17427)]