21288130

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26947}}^1$

素因数の和:27033

約数の個数: 16

約数和(自身を含む): 38805120

約数和(自身を除く): 17516990

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 26947, 53894, 134735, 269470, 2128813, 4257626, 10644065, 21288130]

約数ペア:

[(1, 21288130), (2, 10644065), (5, 4257626), (10, 2128813), (79, 269470), (158, 134735), (395, 53894), (790, 26947)]