19418945

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^2\times {\mathrm{67}}^1$

素因数の和:119

約数の個数: 48

約数和(自身を含む): 29865600

約数和(自身を除く): 10446655

約数列:

[1, 5, 7, 13, 35, 49, 65, 67, 91, 169, 245, 335, 343, 455, 469, 637, 845, 871, 1183, 1715, 2345, 3185, 3283, 4355, 4459, 5915, 6097, 8281, 11323, 16415, 22295, 22981, 30485, 41405, 42679, 56615, 57967, 79261, 114905, 213395, 289835, 298753, 396305, 554827, 1493765, 2774135, 3883789, 19418945]

約数ペア:

[(1, 19418945), (5, 3883789), (7, 2774135), (13, 1493765), (35, 554827), (49, 396305), (65, 298753), (67, 289835), (91, 213395), (169, 114905), (245, 79261), (335, 57967), (343, 56615), (455, 42679), (469, 41405), (637, 30485), (845, 22981), (871, 22295), (1183, 16415), (1715, 11323), (2345, 8281), (3185, 6097), (3283, 5915), (4355, 4459)]