19621889

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 25006080

約数和(自身を除く): 5384191

約数列:

[1, 7, 19, 43, 47, 73, 133, 301, 329, 511, 817, 893, 1387, 2021, 3139, 3431, 5719, 6251, 9709, 14147, 21973, 24017, 38399, 59641, 65189, 147533, 268793, 417487, 456323, 1032731, 2803127, 19621889]

約数ペア:

[(1, 19621889), (7, 2803127), (19, 1032731), (43, 456323), (47, 417487), (73, 268793), (133, 147533), (301, 65189), (329, 59641), (511, 38399), (817, 24017), (893, 21973), (1387, 14147), (2021, 9709), (3139, 6251), (3431, 5719)]