20739520

素因数分解:

$2^6\times 5^1\times {\mathrm{64811}}^1$

素因数の和:64828

約数の個数: 28

約数和(自身を含む): 49386744

約数和(自身を除く): 28647224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64811, 129622, 259244, 324055, 518488, 648110, 1036976, 1296220, 2073952, 2592440, 4147904, 5184880, 10369760, 20739520]

約数ペア:

[(1, 20739520), (2, 10369760), (4, 5184880), (5, 4147904), (8, 2592440), (10, 2073952), (16, 1296220), (20, 1036976), (32, 648110), (40, 518488), (64, 324055), (80, 259244), (160, 129622), (320, 64811)]