19911639

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2887}}^1$

素因数の和:2931

約数の個数: 24

約数和(自身を含む): 30728320

約数和(自身を除く): 10816681

約数列:

[1, 3, 11, 19, 33, 57, 121, 209, 363, 627, 2299, 2887, 6897, 8661, 31757, 54853, 95271, 164559, 349327, 603383, 1047981, 1810149, 6637213, 19911639]

約数ペア:

[(1, 19911639), (3, 6637213), (11, 1810149), (19, 1047981), (33, 603383), (57, 349327), (121, 164559), (209, 95271), (363, 54853), (627, 31757), (2299, 8661), (2887, 6897)]