21086968

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{6173}}^1$

素因数の和:6247

約数の個数: 32

約数和(自身を含む): 45934560

約数和(自身を除く): 24847592

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 244, 427, 488, 854, 1708, 3416, 6173, 12346, 24692, 43211, 49384, 86422, 172844, 345688, 376553, 753106, 1506212, 2635871, 3012424, 5271742, 10543484, 21086968]

約数ペア:

[(1, 21086968), (2, 10543484), (4, 5271742), (7, 3012424), (8, 2635871), (14, 1506212), (28, 753106), (56, 376553), (61, 345688), (122, 172844), (244, 86422), (427, 49384), (488, 43211), (854, 24692), (1708, 12346), (3416, 6173)]