21431319

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2707}}^1$

素因数の和:2759

約数の個数: 32

約数和(自身を含む): 36395520

約数和(自身を除く): 14964201

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 203, 273, 377, 609, 1131, 2639, 2707, 7917, 8121, 18949, 35191, 56847, 78503, 105573, 235509, 246337, 549521, 739011, 1020539, 1648563, 3061617, 7143773, 21431319]

約数ペア:

[(1, 21431319), (3, 7143773), (7, 3061617), (13, 1648563), (21, 1020539), (29, 739011), (39, 549521), (87, 246337), (91, 235509), (203, 105573), (273, 78503), (377, 56847), (609, 35191), (1131, 18949), (2639, 8121), (2707, 7917)]