20781277419

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{274961}}^1$

素因数の和:275091

約数の個数: 32

約数和(自身を含む): 32731476480

約数和(自身を除く): 11950199061

約数列:

[1, 3, 7, 21, 59, 61, 177, 183, 413, 427, 1239, 1281, 3599, 10797, 25193, 75579, 274961, 824883, 1924727, 5774181, 16222699, 16772621, 48668097, 50317863, 113558893, 117408347, 340676679, 352225041, 989584639, 2968753917, 6927092473, 20781277419]

約数ペア:

[(1, 20781277419), (3, 6927092473), (7, 2968753917), (21, 989584639), (59, 352225041), (61, 340676679), (177, 117408347), (183, 113558893), (413, 50317863), (427, 48668097), (1239, 16772621), (1281, 16222699), (3599, 5774181), (10797, 1924727), (25193, 824883), (75579, 274961)]