21172347

素因数分解:

$3^8\times 7^1\times {\mathrm{461}}^1$

素因数の和:492

約数の個数: 36

約数和(自身を含む): 36372336

約数和(自身を除く): 15199989

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 461, 567, 729, 1383, 1701, 2187, 3227, 4149, 5103, 6561, 9681, 12447, 15309, 29043, 37341, 45927, 87129, 112023, 261387, 336069, 784161, 1008207, 2352483, 3024621, 7057449, 21172347]

約数ペア:

[(1, 21172347), (3, 7057449), (7, 3024621), (9, 2352483), (21, 1008207), (27, 784161), (63, 336069), (81, 261387), (189, 112023), (243, 87129), (461, 45927), (567, 37341), (729, 29043), (1383, 15309), (1701, 12447), (2187, 9681), (3227, 6561), (4149, 5103)]