639716481

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{19927}}^1$

素因数の和:20006

約数の個数: 32

約数和(自身を含む): 1004371200

約数和(自身を除く): 364654719

約数列:

[1, 3, 9, 27, 29, 41, 87, 123, 261, 369, 783, 1107, 1189, 3567, 10701, 19927, 32103, 59781, 179343, 538029, 577883, 817007, 1733649, 2451021, 5200947, 7353063, 15602841, 22059189, 23693203, 71079609, 213238827, 639716481]

約数ペア:

[(1, 639716481), (3, 213238827), (9, 71079609), (27, 23693203), (29, 22059189), (41, 15602841), (87, 7353063), (123, 5200947), (261, 2451021), (369, 1733649), (783, 817007), (1107, 577883), (1189, 538029), (3567, 179343), (10701, 59781), (19927, 32103)]