21518638

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{577}}^1\times {\mathrm{643}}^1$

素因数の和:1251

約数の個数: 16

約数和(自身を含む): 33500880

約数和(自身を除く): 11982242

約数列:

[1, 2, 29, 58, 577, 643, 1154, 1286, 16733, 18647, 33466, 37294, 371011, 742022, 10759319, 21518638]

約数ペア:

[(1, 21518638), (2, 10759319), (29, 742022), (58, 371011), (577, 37294), (643, 33466), (1154, 18647), (1286, 16733)]