2640425488

素因数分解:

$2^4\times {\mathrm{643}}^1\times {\mathrm{256651}}^1$

素因数の和:257302

約数の個数: 20

約数和(自身を含む): 5123800528

約数和(自身を除く): 2483375040

約数列:

[1, 2, 4, 8, 16, 643, 1286, 2572, 5144, 10288, 256651, 513302, 1026604, 2053208, 4106416, 165026593, 330053186, 660106372, 1320212744, 2640425488]

約数ペア:

[(1, 2640425488), (2, 1320212744), (4, 660106372), (8, 330053186), (16, 165026593), (643, 4106416), (1286, 2053208), (2572, 1026604), (5144, 513302), (10288, 256651)]