128646320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^2$

素因数の和:195

約数の個数: 120

約数和(自身を含む): 342366480

約数和(自身を除く): 213720160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 71, 80, 88, 110, 116, 142, 145, 176, 220, 232, 284, 290, 319, 355, 440, 464, 568, 580, 638, 710, 781, 880, 1136, 1160, 1276, 1420, 1562, 1595, 2059, 2320, 2552, 2840, 3124, 3190, 3905, 4118, 5041, 5104, 5680, 6248, 6380, 7810, 8236, 10082, 10295, 12496, 12760, 15620, 16472, 20164, 20590, 22649, 25205, 25520, 31240, 32944, 40328, 41180, 45298, 50410, 55451, 62480, 80656, 82360, 90596, 100820, 110902, 113245, 146189, 164720, 181192, 201640, 221804, 226490, 277255, 292378, 362384, 403280, 443608, 452980, 554510, 584756, 730945, 887216, 905960, 1109020, 1169512, 1461890, 1608079, 1811920, 2218040, 2339024, 2923780, 3216158, 4436080, 5847560, 6432316, 8040395, 11695120, 12864632, 16080790, 25729264, 32161580, 64323160, 128646320]

約数ペア:

[(1, 128646320), (2, 64323160), (4, 32161580), (5, 25729264), (8, 16080790), (10, 12864632), (11, 11695120), (16, 8040395), (20, 6432316), (22, 5847560), (29, 4436080), (40, 3216158), (44, 2923780), (55, 2339024), (58, 2218040), (71, 1811920), (80, 1608079), (88, 1461890), (110, 1169512), (116, 1109020), (142, 905960), (145, 887216), (176, 730945), (220, 584756), (232, 554510), (284, 452980), (290, 443608), (319, 403280), (355, 362384), (440, 292378), (464, 277255), (568, 226490), (580, 221804), (638, 201640), (710, 181192), (781, 164720), (880, 146189), (1136, 113245), (1160, 110902), (1276, 100820), (1420, 90596), (1562, 82360), (1595, 80656), (2059, 62480), (2320, 55451), (2552, 50410), (2840, 45298), (3124, 41180), (3190, 40328), (3905, 32944), (4118, 31240), (5041, 25520), (5104, 25205), (5680, 22649), (6248, 20590), (6380, 20164), (7810, 16472), (8236, 15620), (10082, 12760), (10295, 12496)]