20991912

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{20341}}^1$

素因数の和:20393

約数の個数: 32

約数和(自身を含む): 53702880

約数和(自身を除く): 32710968

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 20341, 40682, 61023, 81364, 122046, 162728, 244092, 488184, 874663, 1749326, 2623989, 3498652, 5247978, 6997304, 10495956, 20991912]

約数ペア:

[(1, 20991912), (2, 10495956), (3, 6997304), (4, 5247978), (6, 3498652), (8, 2623989), (12, 1749326), (24, 874663), (43, 488184), (86, 244092), (129, 162728), (172, 122046), (258, 81364), (344, 61023), (516, 40682), (1032, 20341)]