28700805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{4481}}^1$

素因数の和:4557

約数の個数: 32

約数和(自身を含む): 53353728

約数和(自身を除く): 24652923

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 4481, 6405, 13443, 22405, 31367, 67215, 94101, 156835, 273341, 470505, 820023, 1366705, 1913387, 4100115, 5740161, 9566935, 28700805]

約数ペア:

[(1, 28700805), (3, 9566935), (5, 5740161), (7, 4100115), (15, 1913387), (21, 1366705), (35, 820023), (61, 470505), (105, 273341), (183, 156835), (305, 94101), (427, 67215), (915, 31367), (1281, 22405), (2135, 13443), (4481, 6405)]