20861841

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6947}}^1$

素因数の和:6981

約数の個数: 32

約数和(自身を含む): 37352448

約数和(自身を除く): 16490607

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 6947, 20841, 48629, 76417, 90311, 145887, 229251, 270933, 534919, 632177, 993421, 1604757, 1896531, 2980263, 6953947, 20861841]

約数ペア:

[(1, 20861841), (3, 6953947), (7, 2980263), (11, 1896531), (13, 1604757), (21, 993421), (33, 632177), (39, 534919), (77, 270933), (91, 229251), (143, 145887), (231, 90311), (273, 76417), (429, 48629), (1001, 20841), (3003, 6947)]