28321895

素因数分解:

$5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{10243}}^1$

素因数の和:10334

約数の個数: 16

約数和(自身を含む): 39336960

約数和(自身を除く): 11015065

約数列:

[1, 5, 7, 35, 79, 395, 553, 2765, 10243, 51215, 71701, 358505, 809197, 4045985, 5664379, 28321895]

約数ペア:

[(1, 28321895), (5, 5664379), (7, 4045985), (35, 809197), (79, 358505), (395, 71701), (553, 51215), (2765, 10243)]