20338857

素因数分解:

$3^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1087}}^1$

素因数の和:1120

約数の個数: 48

約数和(自身を含む): 38019072

約数和(自身を除く): 17680215

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 243, 297, 567, 693, 891, 1087, 1701, 2079, 2673, 3261, 6237, 7609, 9783, 11957, 18711, 22827, 29349, 35871, 68481, 83699, 88047, 107613, 205443, 251097, 264141, 322839, 616329, 753291, 968517, 1848987, 2259873, 2905551, 6779619, 20338857]

約数ペア:

[(1, 20338857), (3, 6779619), (7, 2905551), (9, 2259873), (11, 1848987), (21, 968517), (27, 753291), (33, 616329), (63, 322839), (77, 264141), (81, 251097), (99, 205443), (189, 107613), (231, 88047), (243, 83699), (297, 68481), (567, 35871), (693, 29349), (891, 22827), (1087, 18711), (1701, 11957), (2079, 9783), (2673, 7609), (3261, 6237)]