21516100

素因数分解:

$2^2\times 5^2\times {\mathrm{215161}}^1$

素因数の和:215175

約数の個数: 18

約数和(自身を含む): 46690154

約数和(自身を除く): 25174054

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 215161, 430322, 860644, 1075805, 2151610, 4303220, 5379025, 10758050, 21516100]

約数ペア:

[(1, 21516100), (2, 10758050), (4, 5379025), (5, 4303220), (10, 2151610), (20, 1075805), (25, 860644), (50, 430322), (100, 215161)]