21099645

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1367}}^1$

素因数の和:1399

約数の個数: 48

約数和(自身を含む): 42681600

約数和(自身を除く): 21581955

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1367, 1715, 2205, 3087, 4101, 5145, 6835, 9569, 12303, 15435, 20505, 28707, 47845, 61515, 66983, 86121, 143535, 200949, 334915, 430605, 468881, 602847, 1004745, 1406643, 2344405, 3014235, 4219929, 7033215, 21099645]

約数ペア:

[(1, 21099645), (3, 7033215), (5, 4219929), (7, 3014235), (9, 2344405), (15, 1406643), (21, 1004745), (35, 602847), (45, 468881), (49, 430605), (63, 334915), (105, 200949), (147, 143535), (245, 86121), (315, 66983), (343, 61515), (441, 47845), (735, 28707), (1029, 20505), (1367, 15435), (1715, 12303), (2205, 9569), (3087, 6835), (4101, 5145)]