21349005

素因数分解:

$3^1\times 5^1\times {\mathrm{827}}^1\times {\mathrm{1721}}^1$

素因数の和:2556

約数の個数: 16

約数和(自身を含む): 34219584

約数和(自身を除く): 12870579

約数列:

[1, 3, 5, 15, 827, 1721, 2481, 4135, 5163, 8605, 12405, 25815, 1423267, 4269801, 7116335, 21349005]

約数ペア:

[(1, 21349005), (3, 7116335), (5, 4269801), (15, 1423267), (827, 25815), (1721, 12405), (2481, 8605), (4135, 5163)]