257897486

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{239237}}^1$

素因数の和:239264

約数の個数: 24

約数和(自身を含む): 490916376

約数和(自身を除く): 233018890

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 239237, 478474, 1674659, 2631607, 3349318, 5263214, 11722613, 18421249, 23445226, 36842498, 128948743, 257897486]

約数ペア:

[(1, 257897486), (2, 128948743), (7, 36842498), (11, 23445226), (14, 18421249), (22, 11722613), (49, 5263214), (77, 3349318), (98, 2631607), (154, 1674659), (539, 478474), (1078, 239237)]