21208935

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{743}}^1$

素因数の和:935

約数の個数: 32

約数和(自身を含む): 37283328

約数和(自身を除く): 16074393

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 173, 519, 743, 865, 1903, 2229, 2595, 3715, 5709, 8173, 9515, 11145, 24519, 28545, 40865, 122595, 128539, 385617, 642695, 1413929, 1928085, 4241787, 7069645, 21208935]

約数ペア:

[(1, 21208935), (3, 7069645), (5, 4241787), (11, 1928085), (15, 1413929), (33, 642695), (55, 385617), (165, 128539), (173, 122595), (519, 40865), (743, 28545), (865, 24519), (1903, 11145), (2229, 9515), (2595, 8173), (3715, 5709)]