81239949

素因数分解:

$3^3\times 7^1\times {\mathrm{421}}^1\times {\mathrm{1021}}^1$

素因数の和:1458

約数の個数: 32

約数和(自身を含む): 138010880

約数和(自身を除く): 56770931

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 421, 1021, 1263, 2947, 3063, 3789, 7147, 8841, 9189, 11367, 21441, 26523, 27567, 64323, 79569, 192969, 429841, 1289523, 3008887, 3868569, 9026661, 11605707, 27079983, 81239949]

約数ペア:

[(1, 81239949), (3, 27079983), (7, 11605707), (9, 9026661), (21, 3868569), (27, 3008887), (63, 1289523), (189, 429841), (421, 192969), (1021, 79569), (1263, 64323), (2947, 27567), (3063, 26523), (3789, 21441), (7147, 11367), (8841, 9189)]