19710495

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1277}}^1$

素因数の和:1309

約数の個数: 48

約数和(自身を含む): 39873600

約数和(自身を除く): 20163105

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1277, 1715, 2205, 3087, 3831, 5145, 6385, 8939, 11493, 15435, 19155, 26817, 44695, 57465, 62573, 80451, 134085, 187719, 312865, 402255, 438011, 563157, 938595, 1314033, 2190055, 2815785, 3942099, 6570165, 19710495]

約数ペア:

[(1, 19710495), (3, 6570165), (5, 3942099), (7, 2815785), (9, 2190055), (15, 1314033), (21, 938595), (35, 563157), (45, 438011), (49, 402255), (63, 312865), (105, 187719), (147, 134085), (245, 80451), (315, 62573), (343, 57465), (441, 44695), (735, 26817), (1029, 19155), (1277, 15435), (1715, 11493), (2205, 8939), (3087, 6385), (3831, 5145)]