19818128

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{112603}}^1$

素因数の和:112622

約数の個数: 20

約数和(自身を含む): 41888688

約数和(自身を除く): 22070560

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 112603, 225206, 450412, 900824, 1238633, 1801648, 2477266, 4954532, 9909064, 19818128]

約数ペア:

[(1, 19818128), (2, 9909064), (4, 4954532), (8, 2477266), (11, 1801648), (16, 1238633), (22, 900824), (44, 450412), (88, 225206), (176, 112603)]