639212288

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{919}}^1$

素因数の和:978

約数の個数: 144

約数和(自身を含む): 1579603200

約数和(自身を除く): 940390912

約数列:

[1, 2, 4, 8, 11, 13, 16, 19, 22, 26, 32, 38, 44, 52, 64, 76, 88, 104, 128, 143, 152, 176, 208, 209, 247, 256, 286, 304, 352, 416, 418, 494, 572, 608, 704, 832, 836, 919, 988, 1144, 1216, 1408, 1664, 1672, 1838, 1976, 2288, 2432, 2717, 2816, 3328, 3344, 3676, 3952, 4576, 4864, 5434, 6688, 7352, 7904, 9152, 10109, 10868, 11947, 13376, 14704, 15808, 17461, 18304, 20218, 21736, 23894, 26752, 29408, 31616, 34922, 36608, 40436, 43472, 47788, 53504, 58816, 63232, 69844, 80872, 86944, 95576, 117632, 131417, 139688, 161744, 173888, 191152, 192071, 226993, 235264, 262834, 279376, 323488, 347776, 382304, 384142, 453986, 525668, 558752, 646976, 695552, 764608, 768284, 907972, 1051336, 1117504, 1293952, 1529216, 1536568, 1815944, 2102672, 2235008, 2496923, 2587904, 3058432, 3073136, 3631888, 4205344, 4470016, 4993846, 6146272, 7263776, 8410688, 9987692, 12292544, 14527552, 16821376, 19975384, 24585088, 29055104, 33642752, 39950768, 49170176, 58110208, 79901536, 159803072, 319606144, 639212288]

約数ペア:

[(1, 639212288), (2, 319606144), (4, 159803072), (8, 79901536), (11, 58110208), (13, 49170176), (16, 39950768), (19, 33642752), (22, 29055104), (26, 24585088), (32, 19975384), (38, 16821376), (44, 14527552), (52, 12292544), (64, 9987692), (76, 8410688), (88, 7263776), (104, 6146272), (128, 4993846), (143, 4470016), (152, 4205344), (176, 3631888), (208, 3073136), (209, 3058432), (247, 2587904), (256, 2496923), (286, 2235008), (304, 2102672), (352, 1815944), (416, 1536568), (418, 1529216), (494, 1293952), (572, 1117504), (608, 1051336), (704, 907972), (832, 768284), (836, 764608), (919, 695552), (988, 646976), (1144, 558752), (1216, 525668), (1408, 453986), (1664, 384142), (1672, 382304), (1838, 347776), (1976, 323488), (2288, 279376), (2432, 262834), (2717, 235264), (2816, 226993), (3328, 192071), (3344, 191152), (3676, 173888), (3952, 161744), (4576, 139688), (4864, 131417), (5434, 117632), (6688, 95576), (7352, 86944), (7904, 80872), (9152, 69844), (10109, 63232), (10868, 58816), (11947, 53504), (13376, 47788), (14704, 43472), (15808, 40436), (17461, 36608), (18304, 34922), (20218, 31616), (21736, 29408), (23894, 26752)]