28550680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 66977280

約数和(自身を除く): 38426600

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 101, 148, 185, 191, 202, 296, 370, 382, 404, 505, 740, 764, 808, 955, 1010, 1480, 1528, 1910, 2020, 3737, 3820, 4040, 7067, 7474, 7640, 14134, 14948, 18685, 19291, 28268, 29896, 35335, 37370, 38582, 56536, 70670, 74740, 77164, 96455, 141340, 149480, 154328, 192910, 282680, 385820, 713767, 771640, 1427534, 2855068, 3568835, 5710136, 7137670, 14275340, 28550680]

約数ペア:

[(1, 28550680), (2, 14275340), (4, 7137670), (5, 5710136), (8, 3568835), (10, 2855068), (20, 1427534), (37, 771640), (40, 713767), (74, 385820), (101, 282680), (148, 192910), (185, 154328), (191, 149480), (202, 141340), (296, 96455), (370, 77164), (382, 74740), (404, 70670), (505, 56536), (740, 38582), (764, 37370), (808, 35335), (955, 29896), (1010, 28268), (1480, 19291), (1528, 18685), (1910, 14948), (2020, 14134), (3737, 7640), (3820, 7474), (4040, 7067)]