81299781

素因数分解:

$3^5\times {\mathrm{157}}^1\times {\mathrm{2131}}^1$

素因数の和:2303

約数の個数: 24

約数和(自身を含む): 122615584

約数和(自身を除く): 41315803

約数列:

[1, 3, 9, 27, 81, 157, 243, 471, 1413, 2131, 4239, 6393, 12717, 19179, 38151, 57537, 172611, 334567, 517833, 1003701, 3011103, 9033309, 27099927, 81299781]

約数ペア:

[(1, 81299781), (3, 27099927), (9, 9033309), (27, 3011103), (81, 1003701), (157, 517833), (243, 334567), (471, 172611), (1413, 57537), (2131, 38151), (4239, 19179), (6393, 12717)]