20123910919

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{211339}}^1$

素因数の和:211630

約数の個数: 16

約数和(自身を含む): 23480719360

約数和(自身を除く): 3356808441

約数列:

[1, 7, 61, 223, 427, 1561, 13603, 95221, 211339, 1479373, 12891679, 47128597, 90241753, 329900179, 2874844417, 20123910919]

約数ペア:

[(1, 20123910919), (7, 2874844417), (61, 329900179), (223, 90241753), (427, 47128597), (1561, 12891679), (13603, 1479373), (95221, 211339)]