28013195

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 43001280

約数和(自身を除く): 14988085

約数列:

[1, 5, 7, 17, 23, 35, 85, 89, 115, 119, 161, 391, 445, 529, 595, 623, 805, 1513, 1955, 2047, 2645, 2737, 3115, 3703, 7565, 8993, 10235, 10591, 13685, 14329, 18515, 34799, 44965, 47081, 52955, 62951, 71645, 173995, 235405, 243593, 314755, 329567, 800377, 1217965, 1647835, 4001885, 5602639, 28013195]

約数ペア:

[(1, 28013195), (5, 5602639), (7, 4001885), (17, 1647835), (23, 1217965), (35, 800377), (85, 329567), (89, 314755), (115, 243593), (119, 235405), (161, 173995), (391, 71645), (445, 62951), (529, 52955), (595, 47081), (623, 44965), (805, 34799), (1513, 18515), (1955, 14329), (2047, 13685), (2645, 10591), (2737, 10235), (3115, 8993), (3703, 7565)]