21099918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 51402240

約数和(自身を除く): 30302322

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 137, 193, 266, 274, 386, 399, 411, 579, 798, 822, 959, 1158, 1351, 1918, 2603, 2702, 2877, 3667, 4053, 5206, 5754, 7334, 7809, 8106, 11001, 15618, 18221, 22002, 25669, 26441, 36442, 51338, 52882, 54663, 77007, 79323, 109326, 154014, 158646, 185087, 370174, 502379, 555261, 1004758, 1110522, 1507137, 3014274, 3516653, 7033306, 10549959, 21099918]

約数ペア:

[(1, 21099918), (2, 10549959), (3, 7033306), (6, 3516653), (7, 3014274), (14, 1507137), (19, 1110522), (21, 1004758), (38, 555261), (42, 502379), (57, 370174), (114, 185087), (133, 158646), (137, 154014), (193, 109326), (266, 79323), (274, 77007), (386, 54663), (399, 52882), (411, 51338), (579, 36442), (798, 26441), (822, 25669), (959, 22002), (1158, 18221), (1351, 15618), (1918, 11001), (2603, 8106), (2702, 7809), (2877, 7334), (3667, 5754), (4053, 5206)]