21049840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37589}}^1$

素因数の和:37609

約数の個数: 40

約数和(自身を含む): 55933920

約数和(自身を除く): 34884080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37589, 75178, 150356, 187945, 263123, 300712, 375890, 526246, 601424, 751780, 1052492, 1315615, 1503560, 2104984, 2631230, 3007120, 4209968, 5262460, 10524920, 21049840]

約数ペア:

[(1, 21049840), (2, 10524920), (4, 5262460), (5, 4209968), (7, 3007120), (8, 2631230), (10, 2104984), (14, 1503560), (16, 1315615), (20, 1052492), (28, 751780), (35, 601424), (40, 526246), (56, 375890), (70, 300712), (80, 263123), (112, 187945), (140, 150356), (280, 75178), (560, 37589)]