56507480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:380

約数の個数: 64

約数和(自身を含む): 130870080

約数和(自身を除く): 74362600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 101, 142, 197, 202, 284, 355, 394, 404, 505, 568, 710, 788, 808, 985, 1010, 1420, 1576, 1970, 2020, 2840, 3940, 4040, 7171, 7880, 13987, 14342, 19897, 27974, 28684, 35855, 39794, 55948, 57368, 69935, 71710, 79588, 99485, 111896, 139870, 143420, 159176, 198970, 279740, 286840, 397940, 559480, 795880, 1412687, 2825374, 5650748, 7063435, 11301496, 14126870, 28253740, 56507480]

約数ペア:

[(1, 56507480), (2, 28253740), (4, 14126870), (5, 11301496), (8, 7063435), (10, 5650748), (20, 2825374), (40, 1412687), (71, 795880), (101, 559480), (142, 397940), (197, 286840), (202, 279740), (284, 198970), (355, 159176), (394, 143420), (404, 139870), (505, 111896), (568, 99485), (710, 79588), (788, 71710), (808, 69935), (985, 57368), (1010, 55948), (1420, 39794), (1576, 35855), (1970, 28684), (2020, 27974), (2840, 19897), (3940, 14342), (4040, 13987), (7171, 7880)]