78221440

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:342

約数の個数: 128

約数和(自身を含む): 209744640

約数和(自身を除く): 131523200

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, 271, 320, 328, 352, 410, 440, 451, 542, 640, 656, 704, 820, 880, 902, 1084, 1312, 1355, 1408, 1640, 1760, 1804, 2168, 2255, 2624, 2710, 2981, 3280, 3520, 3608, 4336, 4510, 5248, 5420, 5962, 6560, 7040, 7216, 8672, 9020, 10840, 11111, 11924, 13120, 14432, 14905, 17344, 18040, 21680, 22222, 23848, 26240, 28864, 29810, 34688, 36080, 43360, 44444, 47696, 55555, 57728, 59620, 72160, 86720, 88888, 95392, 111110, 119240, 122221, 144320, 173440, 177776, 190784, 222220, 238480, 244442, 288640, 355552, 381568, 444440, 476960, 488884, 611105, 711104, 888880, 953920, 977768, 1222210, 1422208, 1777760, 1907840, 1955536, 2444420, 3555520, 3911072, 4888840, 7111040, 7822144, 9777680, 15644288, 19555360, 39110720, 78221440]

約数ペア:

[(1, 78221440), (2, 39110720), (4, 19555360), (5, 15644288), (8, 9777680), (10, 7822144), (11, 7111040), (16, 4888840), (20, 3911072), (22, 3555520), (32, 2444420), (40, 1955536), (41, 1907840), (44, 1777760), (55, 1422208), (64, 1222210), (80, 977768), (82, 953920), (88, 888880), (110, 711104), (128, 611105), (160, 488884), (164, 476960), (176, 444440), (205, 381568), (220, 355552), (271, 288640), (320, 244442), (328, 238480), (352, 222220), (410, 190784), (440, 177776), (451, 173440), (542, 144320), (640, 122221), (656, 119240), (704, 111110), (820, 95392), (880, 88888), (902, 86720), (1084, 72160), (1312, 59620), (1355, 57728), (1408, 55555), (1640, 47696), (1760, 44444), (1804, 43360), (2168, 36080), (2255, 34688), (2624, 29810), (2710, 28864), (2981, 26240), (3280, 23848), (3520, 22222), (3608, 21680), (4336, 18040), (4510, 17344), (5248, 14905), (5420, 14432), (5962, 13120), (6560, 11924), (7040, 11111), (7216, 10840), (8672, 9020)]