21998438721

素因数分解:

$3^2\times 7^2\times {\mathrm{1471}}^1\times {\mathrm{33911}}^1$

素因数の和:35402

約数の個数: 36

約数和(自身を含む): 36989581824

約数和(自身を除く): 14991143103

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 1471, 4413, 10297, 13239, 30891, 33911, 72079, 92673, 101733, 216237, 237377, 305199, 648711, 712131, 1661639, 2136393, 4984917, 14954751, 49883081, 149649243, 349181567, 448947729, 1047544701, 2444270969, 3142634103, 7332812907, 21998438721]

約数ペア:

[(1, 21998438721), (3, 7332812907), (7, 3142634103), (9, 2444270969), (21, 1047544701), (49, 448947729), (63, 349181567), (147, 149649243), (441, 49883081), (1471, 14954751), (4413, 4984917), (10297, 2136393), (13239, 1661639), (30891, 712131), (33911, 648711), (72079, 305199), (92673, 237377), (101733, 216237)]