77818840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 128

約数和(自身を含む): 201553920

約数和(自身を除く): 123735080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 53, 55, 71, 88, 94, 106, 110, 142, 188, 212, 220, 235, 265, 284, 355, 376, 424, 440, 470, 517, 530, 568, 583, 710, 781, 940, 1034, 1060, 1166, 1420, 1562, 1880, 2068, 2120, 2332, 2491, 2585, 2840, 2915, 3124, 3337, 3763, 3905, 4136, 4664, 4982, 5170, 5830, 6248, 6674, 7526, 7810, 9964, 10340, 11660, 12455, 13348, 15052, 15620, 16685, 18815, 19928, 20680, 23320, 24910, 26696, 27401, 30104, 31240, 33370, 36707, 37630, 41393, 49820, 54802, 66740, 73414, 75260, 82786, 99640, 109604, 133480, 137005, 146828, 150520, 165572, 176861, 183535, 206965, 219208, 274010, 293656, 331144, 353722, 367070, 413930, 548020, 707444, 734140, 827860, 884305, 1096040, 1414888, 1468280, 1655720, 1768610, 1945471, 3537220, 3890942, 7074440, 7781884, 9727355, 15563768, 19454710, 38909420, 77818840]

約数ペア:

[(1, 77818840), (2, 38909420), (4, 19454710), (5, 15563768), (8, 9727355), (10, 7781884), (11, 7074440), (20, 3890942), (22, 3537220), (40, 1945471), (44, 1768610), (47, 1655720), (53, 1468280), (55, 1414888), (71, 1096040), (88, 884305), (94, 827860), (106, 734140), (110, 707444), (142, 548020), (188, 413930), (212, 367070), (220, 353722), (235, 331144), (265, 293656), (284, 274010), (355, 219208), (376, 206965), (424, 183535), (440, 176861), (470, 165572), (517, 150520), (530, 146828), (568, 137005), (583, 133480), (710, 109604), (781, 99640), (940, 82786), (1034, 75260), (1060, 73414), (1166, 66740), (1420, 54802), (1562, 49820), (1880, 41393), (2068, 37630), (2120, 36707), (2332, 33370), (2491, 31240), (2585, 30104), (2840, 27401), (2915, 26696), (3124, 24910), (3337, 23320), (3763, 20680), (3905, 19928), (4136, 18815), (4664, 16685), (4982, 15620), (5170, 15052), (5830, 13348), (6248, 12455), (6674, 11660), (7526, 10340), (7810, 9964)]