20623316

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2447}}^1$

素因数の和:2508

約数の個数: 36

約数和(自身を含む): 42977088

約数和(自身を除く): 22353772

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 602, 1204, 2107, 2447, 4214, 4894, 8428, 9788, 17129, 34258, 68516, 105221, 119903, 210442, 239806, 420884, 479612, 736547, 1473094, 2946188, 5155829, 10311658, 20623316]

約数ペア:

[(1, 20623316), (2, 10311658), (4, 5155829), (7, 2946188), (14, 1473094), (28, 736547), (43, 479612), (49, 420884), (86, 239806), (98, 210442), (172, 119903), (196, 105221), (301, 68516), (602, 34258), (1204, 17129), (2107, 9788), (2447, 8428), (4214, 4894)]