21000480688

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{119320913}}^1$

素因数の和:119320932

約数の個数: 20

約数和(自身を含む): 44387380008

約数和(自身を除く): 23386899320

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 119320913, 238641826, 477283652, 954567304, 1312530043, 1909134608, 2625060086, 5250120172, 10500240344, 21000480688]

約数ペア:

[(1, 21000480688), (2, 10500240344), (4, 5250120172), (8, 2625060086), (11, 1909134608), (16, 1312530043), (22, 954567304), (44, 477283652), (88, 238641826), (176, 119320913)]