217436457

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^4\times {\mathrm{37}}^1$

素因数の和:139

約数の個数: 40

約数和(自身を含む): 355754176

約数和(自身を除く): 138317719

約数列:

[1, 3, 7, 21, 23, 37, 69, 111, 161, 259, 483, 529, 777, 851, 1587, 2553, 3703, 5957, 11109, 12167, 17871, 19573, 36501, 58719, 85169, 137011, 255507, 279841, 411033, 450179, 839523, 1350537, 1958887, 3151253, 5876661, 9453759, 10354117, 31062351, 72478819, 217436457]

約数ペア:

[(1, 217436457), (3, 72478819), (7, 31062351), (21, 10354117), (23, 9453759), (37, 5876661), (69, 3151253), (111, 1958887), (161, 1350537), (259, 839523), (483, 450179), (529, 411033), (777, 279841), (851, 255507), (1587, 137011), (2553, 85169), (3703, 58719), (5957, 36501), (11109, 19573), (12167, 17871)]