21000309555

素因数分解:

$3^1\times 5^1\times {\mathrm{769}}^1\times {\mathrm{1820573}}^1$

素因数の和:1821350

約数の個数: 16

約数和(自身を含む): 33644207520

約数和(自身を除く): 12643897965

約数列:

[1, 3, 5, 15, 769, 2307, 3845, 11535, 1820573, 5461719, 9102865, 27308595, 1400020637, 4200061911, 7000103185, 21000309555]

約数ペア:

[(1, 21000309555), (3, 7000103185), (5, 4200061911), (15, 1400020637), (769, 27308595), (2307, 9102865), (3845, 5461719), (11535, 1820573)]