254705920

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:197

約数の個数: 216

約数和(自身を含む): 738194688

約数和(自身を除く): 483488768

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 64, 70, 80, 98, 112, 124, 128, 131, 140, 155, 160, 196, 217, 224, 245, 248, 256, 262, 280, 310, 320, 392, 434, 448, 490, 496, 524, 560, 620, 640, 655, 784, 868, 896, 917, 980, 992, 1048, 1085, 1120, 1240, 1280, 1310, 1519, 1568, 1736, 1792, 1834, 1960, 1984, 2096, 2170, 2240, 2480, 2620, 3038, 3136, 3472, 3668, 3920, 3968, 4061, 4192, 4340, 4480, 4585, 4960, 5240, 6076, 6272, 6419, 6944, 7336, 7595, 7840, 7936, 8122, 8384, 8680, 8960, 9170, 9920, 10480, 12152, 12544, 12838, 13888, 14672, 15190, 15680, 16244, 16768, 17360, 18340, 19840, 20305, 20960, 24304, 25676, 27776, 28427, 29344, 30380, 31360, 32095, 32488, 33536, 34720, 36680, 39680, 40610, 41920, 48608, 51352, 55552, 56854, 58688, 60760, 62720, 64190, 64976, 69440, 73360, 81220, 83840, 97216, 102704, 113708, 117376, 121520, 128380, 129952, 138880, 142135, 146720, 162440, 167680, 194432, 198989, 205408, 227416, 234752, 243040, 256760, 259904, 277760, 284270, 293440, 324880, 388864, 397978, 410816, 454832, 486080, 513520, 519808, 568540, 586880, 649760, 795956, 821632, 909664, 972160, 994945, 1027040, 1039616, 1137080, 1173760, 1299520, 1591912, 1643264, 1819328, 1944320, 1989890, 2054080, 2274160, 2599040, 3183824, 3638656, 3979780, 4108160, 4548320, 5198080, 6367648, 7277312, 7959560, 8216320, 9096640, 12735296, 15919120, 18193280, 25470592, 31838240, 36386560, 50941184, 63676480, 127352960, 254705920]

約数ペア:

[(1, 254705920), (2, 127352960), (4, 63676480), (5, 50941184), (7, 36386560), (8, 31838240), (10, 25470592), (14, 18193280), (16, 15919120), (20, 12735296), (28, 9096640), (31, 8216320), (32, 7959560), (35, 7277312), (40, 6367648), (49, 5198080), (56, 4548320), (62, 4108160), (64, 3979780), (70, 3638656), (80, 3183824), (98, 2599040), (112, 2274160), (124, 2054080), (128, 1989890), (131, 1944320), (140, 1819328), (155, 1643264), (160, 1591912), (196, 1299520), (217, 1173760), (224, 1137080), (245, 1039616), (248, 1027040), (256, 994945), (262, 972160), (280, 909664), (310, 821632), (320, 795956), (392, 649760), (434, 586880), (448, 568540), (490, 519808), (496, 513520), (524, 486080), (560, 454832), (620, 410816), (640, 397978), (655, 388864), (784, 324880), (868, 293440), (896, 284270), (917, 277760), (980, 259904), (992, 256760), (1048, 243040), (1085, 234752), (1120, 227416), (1240, 205408), (1280, 198989), (1310, 194432), (1519, 167680), (1568, 162440), (1736, 146720), (1792, 142135), (1834, 138880), (1960, 129952), (1984, 128380), (2096, 121520), (2170, 117376), (2240, 113708), (2480, 102704), (2620, 97216), (3038, 83840), (3136, 81220), (3472, 73360), (3668, 69440), (3920, 64976), (3968, 64190), (4061, 62720), (4192, 60760), (4340, 58688), (4480, 56854), (4585, 55552), (4960, 51352), (5240, 48608), (6076, 41920), (6272, 40610), (6419, 39680), (6944, 36680), (7336, 34720), (7595, 33536), (7840, 32488), (7936, 32095), (8122, 31360), (8384, 30380), (8680, 29344), (8960, 28427), (9170, 27776), (9920, 25676), (10480, 24304), (12152, 20960), (12544, 20305), (12838, 19840), (13888, 18340), (14672, 17360), (15190, 16768), (15680, 16244)]