18708890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{81343}}^1$

素因数の和:81373

約数の個数: 16

約数和(自身を含む): 35140608

約数和(自身を除く): 16431718

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 81343, 162686, 406715, 813430, 1870889, 3741778, 9354445, 18708890]

約数ペア:

[(1, 18708890), (2, 9354445), (5, 3741778), (10, 1870889), (23, 813430), (46, 406715), (115, 162686), (230, 81343)]