28438705

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 38102400

約数和(自身を除く): 9663695

約数列:

[1, 5, 17, 29, 83, 85, 139, 145, 415, 493, 695, 1411, 2363, 2407, 2465, 4031, 7055, 11537, 11815, 12035, 20155, 40919, 57685, 68527, 196129, 204595, 334573, 342635, 980645, 1672865, 5687741, 28438705]

約数ペア:

[(1, 28438705), (5, 5687741), (17, 1672865), (29, 980645), (83, 342635), (85, 334573), (139, 204595), (145, 196129), (415, 68527), (493, 57685), (695, 40919), (1411, 20155), (2363, 12035), (2407, 11815), (2465, 11537), (4031, 7055)]