20139491883

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{638923}}^1$

素因数の和:639031

約数の個数: 32

約数和(自身を含む): 32712908800

約数和(自身を除く): 12573416917

約数列:

[1, 3, 7, 19, 21, 57, 79, 133, 237, 399, 553, 1501, 1659, 4503, 10507, 31521, 638923, 1916769, 4472461, 12139537, 13417383, 36418611, 50474917, 84976759, 151424751, 254930277, 353324419, 959023423, 1059973257, 2877070269, 6713163961, 20139491883]

約数ペア:

[(1, 20139491883), (3, 6713163961), (7, 2877070269), (19, 1059973257), (21, 959023423), (57, 353324419), (79, 254930277), (133, 151424751), (237, 84976759), (399, 50474917), (553, 36418611), (1501, 13417383), (1659, 12139537), (4503, 4472461), (10507, 1916769), (31521, 638923)]