855474440

素因数分解:

$2^3\times 5^1\times {\mathrm{21386861}}^1$

素因数の和:21386872

約数の個数: 16

約数和(自身を含む): 1924817580

約数和(自身を除く): 1069343140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 21386861, 42773722, 85547444, 106934305, 171094888, 213868610, 427737220, 855474440]

約数ペア:

[(1, 855474440), (2, 427737220), (4, 213868610), (5, 171094888), (8, 106934305), (10, 85547444), (20, 42773722), (40, 21386861)]