81685120

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:354

約数の個数: 128

約数和(自身を含む): 218998080

約数和(自身を除く): 137312960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 41, 44, 55, 64, 80, 82, 88, 110, 128, 160, 164, 176, 205, 220, 283, 320, 328, 352, 410, 440, 451, 566, 640, 656, 704, 820, 880, 902, 1132, 1312, 1408, 1415, 1640, 1760, 1804, 2255, 2264, 2624, 2830, 3113, 3280, 3520, 3608, 4510, 4528, 5248, 5660, 6226, 6560, 7040, 7216, 9020, 9056, 11320, 11603, 12452, 13120, 14432, 15565, 18040, 18112, 22640, 23206, 24904, 26240, 28864, 31130, 36080, 36224, 45280, 46412, 49808, 57728, 58015, 62260, 72160, 90560, 92824, 99616, 116030, 124520, 127633, 144320, 181120, 185648, 199232, 232060, 249040, 255266, 288640, 371296, 398464, 464120, 498080, 510532, 638165, 742592, 928240, 996160, 1021064, 1276330, 1485184, 1856480, 1992320, 2042128, 2552660, 3712960, 4084256, 5105320, 7425920, 8168512, 10210640, 16337024, 20421280, 40842560, 81685120]

約数ペア:

[(1, 81685120), (2, 40842560), (4, 20421280), (5, 16337024), (8, 10210640), (10, 8168512), (11, 7425920), (16, 5105320), (20, 4084256), (22, 3712960), (32, 2552660), (40, 2042128), (41, 1992320), (44, 1856480), (55, 1485184), (64, 1276330), (80, 1021064), (82, 996160), (88, 928240), (110, 742592), (128, 638165), (160, 510532), (164, 498080), (176, 464120), (205, 398464), (220, 371296), (283, 288640), (320, 255266), (328, 249040), (352, 232060), (410, 199232), (440, 185648), (451, 181120), (566, 144320), (640, 127633), (656, 124520), (704, 116030), (820, 99616), (880, 92824), (902, 90560), (1132, 72160), (1312, 62260), (1408, 58015), (1415, 57728), (1640, 49808), (1760, 46412), (1804, 45280), (2255, 36224), (2264, 36080), (2624, 31130), (2830, 28864), (3113, 26240), (3280, 24904), (3520, 23206), (3608, 22640), (4510, 18112), (4528, 18040), (5248, 15565), (5660, 14432), (6226, 13120), (6560, 12452), (7040, 11603), (7216, 11320), (9020, 9056)]