256049787

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{433}}^1\times {\mathrm{971}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 404974080

約数和(自身を除く): 148924293

約数列:

[1, 3, 7, 21, 29, 87, 203, 433, 609, 971, 1299, 2913, 3031, 6797, 9093, 12557, 20391, 28159, 37671, 84477, 87899, 197113, 263697, 420443, 591339, 1261329, 2943101, 8829303, 12192847, 36578541, 85349929, 256049787]

約数ペア:

[(1, 256049787), (3, 85349929), (7, 36578541), (21, 12192847), (29, 8829303), (87, 2943101), (203, 1261329), (433, 591339), (609, 420443), (971, 263697), (1299, 197113), (2913, 87899), (3031, 84477), (6797, 37671), (9093, 28159), (12557, 20391)]