21163059

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{643}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 12221901

約数列:

[1, 3, 9, 23, 27, 53, 69, 159, 207, 477, 621, 643, 1219, 1431, 1929, 3657, 5787, 10971, 14789, 17361, 32913, 34079, 44367, 102237, 133101, 306711, 399303, 783817, 920133, 2351451, 7054353, 21163059]

約数ペア:

[(1, 21163059), (3, 7054353), (9, 2351451), (23, 920133), (27, 783817), (53, 399303), (69, 306711), (159, 133101), (207, 102237), (477, 44367), (621, 34079), (643, 32913), (1219, 17361), (1431, 14789), (1929, 10971), (3657, 5787)]