19943261

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:173

約数の個数: 32

約数和(自身を含む): 24385536

約数和(自身を除く): 4442275

約数列:

[1, 13, 17, 31, 41, 71, 221, 403, 527, 533, 697, 923, 1207, 1271, 2201, 2911, 6851, 9061, 15691, 16523, 21607, 28613, 37417, 37843, 49487, 90241, 280891, 486421, 643331, 1173133, 1534097, 19943261]

約数ペア:

[(1, 19943261), (13, 1534097), (17, 1173133), (31, 643331), (41, 486421), (71, 280891), (221, 90241), (403, 49487), (527, 37843), (533, 37417), (697, 28613), (923, 21607), (1207, 16523), (1271, 15691), (2201, 9061), (2911, 6851)]