20968080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1783}}^1$

素因数の和:1813

約数の個数: 120

約数和(自身を含む): 75655872

約数和(自身を除く): 54687792

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1783, 1960, 2352, 2940, 3566, 3920, 5349, 5880, 7132, 8915, 10698, 11760, 12481, 14264, 17830, 21396, 24962, 26745, 28528, 35660, 37443, 42792, 49924, 53490, 62405, 71320, 74886, 85584, 87367, 99848, 106980, 124810, 142640, 149772, 174734, 187215, 199696, 213960, 249620, 262101, 299544, 349468, 374430, 427920, 436835, 499240, 524202, 599088, 698936, 748860, 873670, 998480, 1048404, 1310505, 1397872, 1497720, 1747340, 2096808, 2621010, 2995440, 3494680, 4193616, 5242020, 6989360, 10484040, 20968080]

約数ペア:

[(1, 20968080), (2, 10484040), (3, 6989360), (4, 5242020), (5, 4193616), (6, 3494680), (7, 2995440), (8, 2621010), (10, 2096808), (12, 1747340), (14, 1497720), (15, 1397872), (16, 1310505), (20, 1048404), (21, 998480), (24, 873670), (28, 748860), (30, 698936), (35, 599088), (40, 524202), (42, 499240), (48, 436835), (49, 427920), (56, 374430), (60, 349468), (70, 299544), (80, 262101), (84, 249620), (98, 213960), (105, 199696), (112, 187215), (120, 174734), (140, 149772), (147, 142640), (168, 124810), (196, 106980), (210, 99848), (240, 87367), (245, 85584), (280, 74886), (294, 71320), (336, 62405), (392, 53490), (420, 49924), (490, 42792), (560, 37443), (588, 35660), (735, 28528), (784, 26745), (840, 24962), (980, 21396), (1176, 17830), (1470, 14264), (1680, 12481), (1783, 11760), (1960, 10698), (2352, 8915), (2940, 7132), (3566, 5880), (3920, 5349)]