20565328

素因数分解:

$2^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1321}}^1$

素因数の和:1475

約数の個数: 40

約数和(自身を含む): 45899840

約数和(自身を除く): 25334512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 139, 278, 556, 973, 1112, 1321, 1946, 2224, 2642, 3892, 5284, 7784, 9247, 10568, 15568, 18494, 21136, 36988, 73976, 147952, 183619, 367238, 734476, 1285333, 1468952, 2570666, 2937904, 5141332, 10282664, 20565328]

約数ペア:

[(1, 20565328), (2, 10282664), (4, 5141332), (7, 2937904), (8, 2570666), (14, 1468952), (16, 1285333), (28, 734476), (56, 367238), (112, 183619), (139, 147952), (278, 73976), (556, 36988), (973, 21136), (1112, 18494), (1321, 15568), (1946, 10568), (2224, 9247), (2642, 7784), (3892, 5284)]