21407590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{125927}}^1$

素因数の和:125951

約数の個数: 16

約数和(自身を含む): 40800672

約数和(自身を除く): 19393082

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 125927, 251854, 629635, 1259270, 2140759, 4281518, 10703795, 21407590]

約数ペア:

[(1, 21407590), (2, 10703795), (5, 4281518), (10, 2140759), (17, 1259270), (34, 629635), (85, 251854), (170, 125927)]