20807846721

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1\times {\mathrm{1559}}^1$

素因数の和:1978

約数の個数: 48

約数和(自身を含む): 31072204800

約数和(自身を除く): 10264358079

約数列:

[1, 3, 9, 47, 139, 141, 227, 417, 423, 681, 1251, 1559, 2043, 4677, 6533, 10669, 14031, 19599, 31553, 32007, 58797, 73273, 94659, 96021, 216701, 219819, 283977, 353893, 650103, 659457, 1061679, 1482991, 1950309, 3185037, 4448973, 10184947, 13346919, 16632971, 30554841, 49191127, 49898913, 91664523, 147573381, 149696739, 442720143, 2311982969, 6935948907, 20807846721]

約数ペア:

[(1, 20807846721), (3, 6935948907), (9, 2311982969), (47, 442720143), (139, 149696739), (141, 147573381), (227, 91664523), (417, 49898913), (423, 49191127), (681, 30554841), (1251, 16632971), (1559, 13346919), (2043, 10184947), (4677, 4448973), (6533, 3185037), (10669, 1950309), (14031, 1482991), (19599, 1061679), (31553, 659457), (32007, 650103), (58797, 353893), (73273, 283977), (94659, 219819), (96021, 216701)]