278766880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:128

約数の個数: 216

約数和(自身を含む): 813016764

約数和(自身を除く): 534249884

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 37, 40, 49, 56, 62, 70, 74, 80, 98, 112, 124, 140, 148, 155, 160, 185, 196, 217, 224, 245, 248, 259, 280, 296, 310, 370, 392, 434, 490, 496, 518, 560, 592, 620, 740, 784, 868, 961, 980, 992, 1036, 1085, 1120, 1147, 1184, 1240, 1295, 1480, 1519, 1568, 1736, 1813, 1922, 1960, 2072, 2170, 2294, 2480, 2590, 2960, 3038, 3472, 3626, 3844, 3920, 4144, 4340, 4588, 4805, 4960, 5180, 5735, 5920, 6076, 6727, 6944, 7252, 7595, 7688, 7840, 8029, 8288, 8680, 9065, 9176, 9610, 10360, 11470, 12152, 13454, 14504, 15190, 15376, 16058, 17360, 18130, 18352, 19220, 20720, 22940, 24304, 26908, 29008, 30380, 30752, 32116, 33635, 34720, 35557, 36260, 36704, 38440, 40145, 41440, 45880, 47089, 48608, 53816, 56203, 58016, 60760, 64232, 67270, 71114, 72520, 76880, 80290, 91760, 94178, 107632, 112406, 121520, 128464, 134540, 142228, 145040, 153760, 160580, 177785, 183520, 188356, 215264, 224812, 235445, 243040, 248899, 256928, 269080, 281015, 284456, 290080, 321160, 355570, 376712, 449624, 470890, 497798, 538160, 562030, 568912, 642320, 711140, 753424, 899248, 941780, 995596, 1076320, 1124060, 1137824, 1244495, 1284640, 1422280, 1506848, 1742293, 1798496, 1883560, 1991192, 2248120, 2488990, 2844560, 3484586, 3767120, 3982384, 4496240, 4977980, 5689120, 6969172, 7534240, 7964768, 8711465, 8992480, 9955960, 13938344, 17422930, 19911920, 27876688, 34845860, 39823840, 55753376, 69691720, 139383440, 278766880]

約数ペア:

[(1, 278766880), (2, 139383440), (4, 69691720), (5, 55753376), (7, 39823840), (8, 34845860), (10, 27876688), (14, 19911920), (16, 17422930), (20, 13938344), (28, 9955960), (31, 8992480), (32, 8711465), (35, 7964768), (37, 7534240), (40, 6969172), (49, 5689120), (56, 4977980), (62, 4496240), (70, 3982384), (74, 3767120), (80, 3484586), (98, 2844560), (112, 2488990), (124, 2248120), (140, 1991192), (148, 1883560), (155, 1798496), (160, 1742293), (185, 1506848), (196, 1422280), (217, 1284640), (224, 1244495), (245, 1137824), (248, 1124060), (259, 1076320), (280, 995596), (296, 941780), (310, 899248), (370, 753424), (392, 711140), (434, 642320), (490, 568912), (496, 562030), (518, 538160), (560, 497798), (592, 470890), (620, 449624), (740, 376712), (784, 355570), (868, 321160), (961, 290080), (980, 284456), (992, 281015), (1036, 269080), (1085, 256928), (1120, 248899), (1147, 243040), (1184, 235445), (1240, 224812), (1295, 215264), (1480, 188356), (1519, 183520), (1568, 177785), (1736, 160580), (1813, 153760), (1922, 145040), (1960, 142228), (2072, 134540), (2170, 128464), (2294, 121520), (2480, 112406), (2590, 107632), (2960, 94178), (3038, 91760), (3472, 80290), (3626, 76880), (3844, 72520), (3920, 71114), (4144, 67270), (4340, 64232), (4588, 60760), (4805, 58016), (4960, 56203), (5180, 53816), (5735, 48608), (5920, 47089), (6076, 45880), (6727, 41440), (6944, 40145), (7252, 38440), (7595, 36704), (7688, 36260), (7840, 35557), (8029, 34720), (8288, 33635), (8680, 32116), (9065, 30752), (9176, 30380), (9610, 29008), (10360, 26908), (11470, 24304), (12152, 22940), (13454, 20720), (14504, 19220), (15190, 18352), (15376, 18130), (16058, 17360)]