25809405

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 42699648

約数和(自身を除く): 16890243

約数列:

[1, 3, 5, 15, 61, 67, 183, 201, 305, 335, 421, 915, 1005, 1263, 2105, 4087, 6315, 12261, 20435, 25681, 28207, 61305, 77043, 84621, 128405, 141035, 385215, 423105, 1720627, 5161881, 8603135, 25809405]

約数ペア:

[(1, 25809405), (3, 8603135), (5, 5161881), (15, 1720627), (61, 423105), (67, 385215), (183, 141035), (201, 128405), (305, 84621), (335, 77043), (421, 61305), (915, 28207), (1005, 25681), (1263, 20435), (2105, 12261), (4087, 6315)]