21965121

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{911}}^1$

素因数の和:986

約数の個数: 32

約数和(自身を含む): 35020800

約数和(自身を除く): 13055679

約数列:

[1, 3, 9, 19, 27, 47, 57, 141, 171, 423, 513, 893, 911, 1269, 2679, 2733, 8037, 8199, 17309, 24111, 24597, 42817, 51927, 128451, 155781, 385353, 467343, 813523, 1156059, 2440569, 7321707, 21965121]

約数ペア:

[(1, 21965121), (3, 7321707), (9, 2440569), (19, 1156059), (27, 813523), (47, 467343), (57, 385353), (141, 155781), (171, 128451), (423, 51927), (513, 42817), (893, 24597), (911, 24111), (1269, 17309), (2679, 8199), (2733, 8037)]