331605760

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:250

約数の個数: 144

約数和(自身を含む): 839446272

約数和(自身を除く): 507840512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 80, 122, 124, 128, 137, 155, 160, 244, 248, 256, 274, 305, 310, 320, 488, 496, 548, 610, 620, 640, 685, 976, 992, 1096, 1220, 1240, 1280, 1370, 1891, 1952, 1984, 2192, 2440, 2480, 2740, 3782, 3904, 3968, 4247, 4384, 4880, 4960, 5480, 7564, 7808, 7936, 8357, 8494, 8768, 9455, 9760, 9920, 10960, 15128, 15616, 16714, 16988, 17536, 18910, 19520, 19840, 21235, 21920, 30256, 33428, 33976, 35072, 37820, 39040, 39680, 41785, 42470, 43840, 60512, 66856, 67952, 75640, 78080, 83570, 84940, 87680, 121024, 133712, 135904, 151280, 167140, 169880, 175360, 242048, 259067, 267424, 271808, 302560, 334280, 339760, 484096, 518134, 534848, 543616, 605120, 668560, 679520, 1036268, 1069696, 1087232, 1210240, 1295335, 1337120, 1359040, 2072536, 2139392, 2420480, 2590670, 2674240, 2718080, 4145072, 5181340, 5348480, 5436160, 8290144, 10362680, 10696960, 16580288, 20725360, 33160576, 41450720, 66321152, 82901440, 165802880, 331605760]

約数ペア:

[(1, 331605760), (2, 165802880), (4, 82901440), (5, 66321152), (8, 41450720), (10, 33160576), (16, 20725360), (20, 16580288), (31, 10696960), (32, 10362680), (40, 8290144), (61, 5436160), (62, 5348480), (64, 5181340), (80, 4145072), (122, 2718080), (124, 2674240), (128, 2590670), (137, 2420480), (155, 2139392), (160, 2072536), (244, 1359040), (248, 1337120), (256, 1295335), (274, 1210240), (305, 1087232), (310, 1069696), (320, 1036268), (488, 679520), (496, 668560), (548, 605120), (610, 543616), (620, 534848), (640, 518134), (685, 484096), (976, 339760), (992, 334280), (1096, 302560), (1220, 271808), (1240, 267424), (1280, 259067), (1370, 242048), (1891, 175360), (1952, 169880), (1984, 167140), (2192, 151280), (2440, 135904), (2480, 133712), (2740, 121024), (3782, 87680), (3904, 84940), (3968, 83570), (4247, 78080), (4384, 75640), (4880, 67952), (4960, 66856), (5480, 60512), (7564, 43840), (7808, 42470), (7936, 41785), (8357, 39680), (8494, 39040), (8768, 37820), (9455, 35072), (9760, 33976), (9920, 33428), (10960, 30256), (15128, 21920), (15616, 21235), (16714, 19840), (16988, 19520), (17536, 18910)]