81147440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:219

約数の個数: 120

約数和(自身を含む): 211955184

約数和(自身を除く): 130807744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 83, 88, 101, 110, 121, 166, 176, 202, 220, 242, 332, 404, 415, 440, 484, 505, 605, 664, 808, 830, 880, 913, 968, 1010, 1111, 1210, 1328, 1616, 1660, 1826, 1936, 2020, 2222, 2420, 3320, 3652, 4040, 4444, 4565, 4840, 5555, 6640, 7304, 8080, 8383, 8888, 9130, 9680, 10043, 11110, 12221, 14608, 16766, 17776, 18260, 20086, 22220, 24442, 33532, 36520, 40172, 41915, 44440, 48884, 50215, 61105, 67064, 73040, 80344, 83830, 88880, 92213, 97768, 100430, 122210, 134128, 160688, 167660, 184426, 195536, 200860, 244420, 335320, 368852, 401720, 461065, 488840, 670640, 737704, 803440, 922130, 977680, 1014343, 1475408, 1844260, 2028686, 3688520, 4057372, 5071715, 7377040, 8114744, 10143430, 16229488, 20286860, 40573720, 81147440]

約数ペア:

[(1, 81147440), (2, 40573720), (4, 20286860), (5, 16229488), (8, 10143430), (10, 8114744), (11, 7377040), (16, 5071715), (20, 4057372), (22, 3688520), (40, 2028686), (44, 1844260), (55, 1475408), (80, 1014343), (83, 977680), (88, 922130), (101, 803440), (110, 737704), (121, 670640), (166, 488840), (176, 461065), (202, 401720), (220, 368852), (242, 335320), (332, 244420), (404, 200860), (415, 195536), (440, 184426), (484, 167660), (505, 160688), (605, 134128), (664, 122210), (808, 100430), (830, 97768), (880, 92213), (913, 88880), (968, 83830), (1010, 80344), (1111, 73040), (1210, 67064), (1328, 61105), (1616, 50215), (1660, 48884), (1826, 44440), (1936, 41915), (2020, 40172), (2222, 36520), (2420, 33532), (3320, 24442), (3652, 22220), (4040, 20086), (4444, 18260), (4565, 17776), (4840, 16766), (5555, 14608), (6640, 12221), (7304, 11110), (8080, 10043), (8383, 9680), (8888, 9130)]