199975972

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^2$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 426681024

約数和(自身を除く): 226705052

約数列:

[1, 2, 4, 7, 14, 28, 37, 43, 67, 74, 86, 134, 148, 172, 259, 268, 301, 469, 518, 602, 938, 1036, 1204, 1591, 1876, 2479, 2881, 3182, 4489, 4958, 5762, 6364, 8978, 9916, 11137, 11524, 17353, 17956, 20167, 22274, 31423, 34706, 40334, 44548, 62846, 69412, 80668, 106597, 125692, 166093, 193027, 213194, 332186, 386054, 426388, 664372, 746179, 772108, 1162651, 1351189, 1492358, 2325302, 2702378, 2984716, 4650604, 5404756, 7141999, 14283998, 28567996, 49993993, 99987986, 199975972]

約数ペア:

[(1, 199975972), (2, 99987986), (4, 49993993), (7, 28567996), (14, 14283998), (28, 7141999), (37, 5404756), (43, 4650604), (67, 2984716), (74, 2702378), (86, 2325302), (134, 1492358), (148, 1351189), (172, 1162651), (259, 772108), (268, 746179), (301, 664372), (469, 426388), (518, 386054), (602, 332186), (938, 213194), (1036, 193027), (1204, 166093), (1591, 125692), (1876, 106597), (2479, 80668), (2881, 69412), (3182, 62846), (4489, 44548), (4958, 40334), (5762, 34706), (6364, 31423), (8978, 22274), (9916, 20167), (11137, 17956), (11524, 17353)]