12840295

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 18002880

約数和(自身を除く): 5162585

約数列:

[1, 5, 13, 19, 37, 65, 95, 185, 247, 281, 481, 703, 1235, 1405, 2405, 3515, 3653, 5339, 9139, 10397, 18265, 26695, 45695, 51985, 69407, 135161, 197543, 347035, 675805, 987715, 2568059, 12840295]

約数ペア:

[(1, 12840295), (5, 2568059), (13, 987715), (19, 675805), (37, 347035), (65, 197543), (95, 135161), (185, 69407), (247, 51985), (281, 45695), (481, 26695), (703, 18265), (1235, 10397), (1405, 9139), (2405, 5339), (3515, 3653)]