20432440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72973}}^1$

素因数の和:72991

約数の個数: 32

約数和(自身を含む): 52541280

約数和(自身を除く): 32108840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72973, 145946, 291892, 364865, 510811, 583784, 729730, 1021622, 1459460, 2043244, 2554055, 2918920, 4086488, 5108110, 10216220, 20432440]

約数ペア:

[(1, 20432440), (2, 10216220), (4, 5108110), (5, 4086488), (7, 2918920), (8, 2554055), (10, 2043244), (14, 1459460), (20, 1021622), (28, 729730), (35, 583784), (40, 510811), (56, 364865), (70, 291892), (140, 145946), (280, 72973)]