638637507

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{11173}}^1$

素因数の和:11284

約数の個数: 32

約数和(自身を含む): 992251200

約数和(自身を除く): 353613693

約数列:

[1, 3, 9, 27, 29, 73, 87, 219, 261, 657, 783, 1971, 2117, 6351, 11173, 19053, 33519, 57159, 100557, 301671, 324017, 815629, 972051, 2446887, 2916153, 7340661, 8748459, 22021983, 23653241, 70959723, 212879169, 638637507]

約数ペア:

[(1, 638637507), (3, 212879169), (9, 70959723), (27, 23653241), (29, 22021983), (73, 8748459), (87, 7340661), (219, 2916153), (261, 2446887), (657, 972051), (783, 815629), (1971, 324017), (2117, 301671), (6351, 100557), (11173, 57159), (19053, 33519)]