12640947

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20161}}^1$

素因数の和:20194

約数の個数: 16

約数和(自身を含む): 19355520

約数和(自身を除く): 6714573

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 20161, 60483, 221771, 383059, 665313, 1149177, 4213649, 12640947]

約数ペア:

[(1, 12640947), (3, 4213649), (11, 1149177), (19, 665313), (33, 383059), (57, 221771), (209, 60483), (627, 20161)]