21139070

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{91909}}^1$

素因数の和:91939

約数の個数: 16

約数和(自身を含む): 39705120

約数和(自身を除く): 18566050

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 91909, 183818, 459545, 919090, 2113907, 4227814, 10569535, 21139070]

約数ペア:

[(1, 21139070), (2, 10569535), (5, 4227814), (10, 2113907), (23, 919090), (46, 459545), (115, 183818), (230, 91909)]