257600405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1\times {\mathrm{271}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 336296448

約数和(自身を除く): 78696043

約数列:

[1, 5, 17, 53, 85, 211, 265, 271, 901, 1055, 1355, 3587, 4505, 4607, 11183, 14363, 17935, 23035, 55915, 57181, 71815, 190111, 244171, 285905, 950555, 972077, 1220855, 3030593, 4860385, 15152965, 51520081, 257600405]

約数ペア:

[(1, 257600405), (5, 51520081), (17, 15152965), (53, 4860385), (85, 3030593), (211, 1220855), (265, 972077), (271, 950555), (901, 285905), (1055, 244171), (1355, 190111), (3587, 71815), (4505, 57181), (4607, 55915), (11183, 23035), (14363, 17935)]