20121479147

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{1231}}^1\times {\mathrm{212281}}^1$

素因数の和:213530

約数の個数: 16

約数和(自身を含む): 25107016704

約数和(自身を除く): 4985537557

約数列:

[1, 7, 11, 77, 1231, 8617, 13541, 94787, 212281, 1485967, 2335091, 16345637, 261317911, 1829225377, 2874497021, 20121479147]

約数ペア:

[(1, 20121479147), (7, 2874497021), (11, 1829225377), (77, 261317911), (1231, 16345637), (8617, 2335091), (13541, 1485967), (94787, 212281)]