21728595

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{206939}}^1$

素因数の和:206954

約数の個数: 16

約数和(自身を含む): 39732480

約数和(自身を除く): 18003885

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 206939, 620817, 1034695, 1448573, 3104085, 4345719, 7242865, 21728595]

約数ペア:

[(1, 21728595), (3, 7242865), (5, 4345719), (7, 3104085), (15, 1448573), (21, 1034695), (35, 620817), (105, 206939)]