21453715

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{271}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 26320896

約数和(自身を除く): 4867181

約数列:

[1, 5, 71, 223, 271, 355, 1115, 1355, 15833, 19241, 60433, 79165, 96205, 302165, 4290743, 21453715]

約数ペア:

[(1, 21453715), (5, 4290743), (71, 302165), (223, 96205), (271, 79165), (355, 60433), (1115, 19241), (1355, 15833)]