20714260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{919}}^1$

素因数の和:965

約数の個数: 72

約数和(自身を含む): 52859520

約数和(自身を除く): 32145260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 919, 980, 1127, 1610, 1838, 2254, 3220, 3676, 4508, 4595, 5635, 6433, 9190, 11270, 12866, 18380, 21137, 22540, 25732, 32165, 42274, 45031, 64330, 84548, 90062, 105685, 128660, 147959, 180124, 211370, 225155, 295918, 422740, 450310, 591836, 739795, 900620, 1035713, 1479590, 2071426, 2959180, 4142852, 5178565, 10357130, 20714260]

約数ペア:

[(1, 20714260), (2, 10357130), (4, 5178565), (5, 4142852), (7, 2959180), (10, 2071426), (14, 1479590), (20, 1035713), (23, 900620), (28, 739795), (35, 591836), (46, 450310), (49, 422740), (70, 295918), (92, 225155), (98, 211370), (115, 180124), (140, 147959), (161, 128660), (196, 105685), (230, 90062), (245, 84548), (322, 64330), (460, 45031), (490, 42274), (644, 32165), (805, 25732), (919, 22540), (980, 21137), (1127, 18380), (1610, 12866), (1838, 11270), (2254, 9190), (3220, 6433), (3676, 5635), (4508, 4595)]