28342180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13001}}^1$

素因数の和:13119

約数の個数: 24

約数和(自身を含む): 60069240

約数和(自身を除く): 31727060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 13001, 26002, 52004, 65005, 130010, 260020, 1417109, 2834218, 5668436, 7085545, 14171090, 28342180]

約数ペア:

[(1, 28342180), (2, 14171090), (4, 7085545), (5, 5668436), (10, 2834218), (20, 1417109), (109, 260020), (218, 130010), (436, 65005), (545, 52004), (1090, 26002), (2180, 13001)]