20987784

素因数分解:

$2^3\times 3^2\times {\mathrm{43}}^1\times {\mathrm{6779}}^1$

素因数の和:6834

約数の個数: 48

約数和(自身を含む): 58172400

約数和(自身を除く): 37184616

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 43, 72, 86, 129, 172, 258, 344, 387, 516, 774, 1032, 1548, 3096, 6779, 13558, 20337, 27116, 40674, 54232, 61011, 81348, 122022, 162696, 244044, 291497, 488088, 582994, 874491, 1165988, 1748982, 2331976, 2623473, 3497964, 5246946, 6995928, 10493892, 20987784]

約数ペア:

[(1, 20987784), (2, 10493892), (3, 6995928), (4, 5246946), (6, 3497964), (8, 2623473), (9, 2331976), (12, 1748982), (18, 1165988), (24, 874491), (36, 582994), (43, 488088), (72, 291497), (86, 244044), (129, 162696), (172, 122022), (258, 81348), (344, 61011), (387, 54232), (516, 40674), (774, 27116), (1032, 20337), (1548, 13558), (3096, 6779)]