21179457

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1153}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 33184424

約数和(自身を除く): 12004967

約数列:

[1, 3, 9, 13, 39, 117, 157, 471, 1153, 1413, 2041, 3459, 6123, 10377, 14989, 18369, 44967, 134901, 181021, 543063, 1629189, 2353273, 7059819, 21179457]

約数ペア:

[(1, 21179457), (3, 7059819), (9, 2353273), (13, 1629189), (39, 543063), (117, 181021), (157, 134901), (471, 44967), (1153, 18369), (1413, 14989), (2041, 10377), (3459, 6123)]