780878080

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:292

約数の個数: 144

約数和(自身を含む): 1941219504

約数和(自身を除く): 1160341424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 73, 80, 122, 128, 137, 146, 160, 244, 256, 274, 292, 305, 320, 365, 488, 548, 584, 610, 640, 685, 730, 976, 1096, 1168, 1220, 1280, 1370, 1460, 1952, 2192, 2336, 2440, 2740, 2920, 3904, 4384, 4453, 4672, 4880, 5480, 5840, 7808, 8357, 8768, 8906, 9344, 9760, 10001, 10960, 11680, 15616, 16714, 17536, 17812, 18688, 19520, 20002, 21920, 22265, 23360, 33428, 35072, 35624, 39040, 40004, 41785, 43840, 44530, 46720, 50005, 66856, 71248, 78080, 80008, 83570, 87680, 89060, 93440, 100010, 133712, 142496, 160016, 167140, 175360, 178120, 200020, 267424, 284992, 320032, 334280, 356240, 400040, 534848, 569984, 610061, 640064, 668560, 712480, 800080, 1069696, 1139968, 1220122, 1280128, 1337120, 1424960, 1600160, 2139392, 2440244, 2560256, 2674240, 2849920, 3050305, 3200320, 4880488, 5348480, 5699840, 6100610, 6400640, 9760976, 10696960, 12201220, 12801280, 19521952, 24402440, 39043904, 48804880, 78087808, 97609760, 156175616, 195219520, 390439040, 780878080]

約数ペア:

[(1, 780878080), (2, 390439040), (4, 195219520), (5, 156175616), (8, 97609760), (10, 78087808), (16, 48804880), (20, 39043904), (32, 24402440), (40, 19521952), (61, 12801280), (64, 12201220), (73, 10696960), (80, 9760976), (122, 6400640), (128, 6100610), (137, 5699840), (146, 5348480), (160, 4880488), (244, 3200320), (256, 3050305), (274, 2849920), (292, 2674240), (305, 2560256), (320, 2440244), (365, 2139392), (488, 1600160), (548, 1424960), (584, 1337120), (610, 1280128), (640, 1220122), (685, 1139968), (730, 1069696), (976, 800080), (1096, 712480), (1168, 668560), (1220, 640064), (1280, 610061), (1370, 569984), (1460, 534848), (1952, 400040), (2192, 356240), (2336, 334280), (2440, 320032), (2740, 284992), (2920, 267424), (3904, 200020), (4384, 178120), (4453, 175360), (4672, 167140), (4880, 160016), (5480, 142496), (5840, 133712), (7808, 100010), (8357, 93440), (8768, 89060), (8906, 87680), (9344, 83570), (9760, 80008), (10001, 78080), (10960, 71248), (11680, 66856), (15616, 50005), (16714, 46720), (17536, 44530), (17812, 43840), (18688, 41785), (19520, 40004), (20002, 39040), (21920, 35624), (22265, 35072), (23360, 33428)]