21828660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51973}}^1$

素因数の和:51992

約数の個数: 48

約数和(自身を含む): 69853056

約数和(自身を除く): 48024396

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51973, 103946, 155919, 207892, 259865, 311838, 363811, 519730, 623676, 727622, 779595, 1039460, 1091433, 1455244, 1559190, 1819055, 2182866, 3118380, 3638110, 4365732, 5457165, 7276220, 10914330, 21828660]

約数ペア:

[(1, 21828660), (2, 10914330), (3, 7276220), (4, 5457165), (5, 4365732), (6, 3638110), (7, 3118380), (10, 2182866), (12, 1819055), (14, 1559190), (15, 1455244), (20, 1091433), (21, 1039460), (28, 779595), (30, 727622), (35, 623676), (42, 519730), (60, 363811), (70, 311838), (84, 259865), (105, 207892), (140, 155919), (210, 103946), (420, 51973)]