21375830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{305369}}^1$

素因数の和:305383

約数の個数: 16

約数和(自身を含む): 43973280

約数和(自身を除く): 22597450

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 305369, 610738, 1526845, 2137583, 3053690, 4275166, 10687915, 21375830]

約数ペア:

[(1, 21375830), (2, 10687915), (5, 4275166), (7, 3053690), (10, 2137583), (14, 1526845), (35, 610738), (70, 305369)]