821212

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 1662080

約数和(自身を除く): 840868

約数列:

[1, 2, 4, 7, 14, 28, 139, 211, 278, 422, 556, 844, 973, 1477, 1946, 2954, 3892, 5908, 29329, 58658, 117316, 205303, 410606, 821212]

約数ペア:

[(1, 821212), (2, 410606), (4, 205303), (7, 117316), (14, 58658), (28, 29329), (139, 5908), (211, 3892), (278, 2954), (422, 1946), (556, 1477), (844, 973)]