21257720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48313}}^1$

素因数の和:48335

約数の個数: 32

約数和(自身を含む): 52179120

約数和(自身を除く): 30921400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48313, 96626, 193252, 241565, 386504, 483130, 531443, 966260, 1062886, 1932520, 2125772, 2657215, 4251544, 5314430, 10628860, 21257720]

約数ペア:

[(1, 21257720), (2, 10628860), (4, 5314430), (5, 4251544), (8, 2657215), (10, 2125772), (11, 1932520), (20, 1062886), (22, 966260), (40, 531443), (44, 483130), (55, 386504), (88, 241565), (110, 193252), (220, 96626), (440, 48313)]