19877907

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23087}}^1$

素因数の和:23138

約数の個数: 16

約数和(自身を含む): 31030272

約数和(自身を除く): 11152365

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23087, 69261, 161609, 484827, 946567, 2839701, 6625969, 19877907]

約数ペア:

[(1, 19877907), (3, 6625969), (7, 2839701), (21, 946567), (41, 484827), (123, 161609), (287, 69261), (861, 23087)]