21139980273

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{1025267}}^1$

素因数の和:1025381

約数の個数: 24

約数和(自身を含む): 31988361600

約数和(自身を除く): 10848381327

約数列:

[1, 3, 9, 29, 79, 87, 237, 261, 711, 2291, 6873, 20619, 1025267, 3075801, 9227403, 29732743, 80996093, 89198229, 242988279, 267594687, 728964837, 2348886697, 7046660091, 21139980273]

約数ペア:

[(1, 21139980273), (3, 7046660091), (9, 2348886697), (29, 728964837), (79, 267594687), (87, 242988279), (237, 89198229), (261, 80996093), (711, 29732743), (2291, 9227403), (6873, 3075801), (20619, 1025267)]