28656915

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 53932032

約数和(自身を除く): 25275117

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 127, 147, 245, 307, 381, 635, 735, 889, 921, 1535, 1905, 2149, 2667, 4445, 4605, 6223, 6447, 10745, 13335, 15043, 18669, 31115, 32235, 38989, 45129, 75215, 93345, 116967, 194945, 225645, 272923, 584835, 818769, 1364615, 1910461, 4093845, 5731383, 9552305, 28656915]

約数ペア:

[(1, 28656915), (3, 9552305), (5, 5731383), (7, 4093845), (15, 1910461), (21, 1364615), (35, 818769), (49, 584835), (105, 272923), (127, 225645), (147, 194945), (245, 116967), (307, 93345), (381, 75215), (635, 45129), (735, 38989), (889, 32235), (921, 31115), (1535, 18669), (1905, 15043), (2149, 13335), (2667, 10745), (4445, 6447), (4605, 6223)]