20125805

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{1087}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 28879872

約数和(自身を除く): 8754067

約数列:

[1, 5, 7, 23, 35, 115, 161, 529, 805, 1087, 2645, 3703, 5435, 7609, 18515, 25001, 38045, 125005, 175007, 575023, 875035, 2875115, 4025161, 20125805]

約数ペア:

[(1, 20125805), (5, 4025161), (7, 2875115), (23, 875035), (35, 575023), (115, 175007), (161, 125005), (529, 38045), (805, 25001), (1087, 18515), (2645, 7609), (3703, 5435)]