257043591

素因数分解:

$3^3\times 7^1\times {\mathrm{839}}^1\times {\mathrm{1621}}^1$

素因数の和:2476

約数の個数: 32

約数和(自身を含む): 435993600

約数和(自身を除く): 178950009

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 839, 1621, 2517, 4863, 5873, 7551, 11347, 14589, 17619, 22653, 34041, 43767, 52857, 102123, 158571, 306369, 1360019, 4080057, 9520133, 12240171, 28560399, 36720513, 85681197, 257043591]

約数ペア:

[(1, 257043591), (3, 85681197), (7, 36720513), (9, 28560399), (21, 12240171), (27, 9520133), (63, 4080057), (189, 1360019), (839, 306369), (1621, 158571), (2517, 102123), (4863, 52857), (5873, 43767), (7551, 34041), (11347, 22653), (14589, 17619)]