21941523

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{269}}^1$

素因数の和:353

約数の個数: 40

約数和(自身を含む): 35283600

約数和(自身を除く): 13342077

約数列:

[1, 3, 9, 19, 27, 53, 57, 81, 159, 171, 269, 477, 513, 807, 1007, 1431, 1539, 2421, 3021, 4293, 5111, 7263, 9063, 14257, 15333, 21789, 27189, 42771, 45999, 81567, 128313, 137997, 270883, 384939, 413991, 812649, 1154817, 2437947, 7313841, 21941523]

約数ペア:

[(1, 21941523), (3, 7313841), (9, 2437947), (19, 1154817), (27, 812649), (53, 413991), (57, 384939), (81, 270883), (159, 137997), (171, 128313), (269, 81567), (477, 45999), (513, 42771), (807, 27189), (1007, 21789), (1431, 15333), (1539, 14257), (2421, 9063), (3021, 7263), (4293, 5111)]