201991320027

素因数分解:

$3^3\times 7^1\times {\mathrm{1068737143}}^1$

素因数の和:1068737159

約数の個数: 16

約数和(自身を含む): 341995886080

約数和(自身を除く): 140004566053

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1068737143, 3206211429, 7481160001, 9618634287, 22443480003, 28855902861, 67330440009, 201991320027]

約数ペア:

[(1, 201991320027), (3, 67330440009), (7, 28855902861), (9, 22443480003), (21, 9618634287), (27, 7481160001), (63, 3206211429), (189, 1068737143)]