20595680

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:137

約数の個数: 144

約数和(自身を含む): 58949856

約数和(自身を除く): 38354176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 70, 71, 74, 80, 98, 112, 140, 142, 148, 160, 185, 196, 224, 245, 259, 280, 284, 296, 355, 370, 392, 490, 497, 518, 560, 568, 592, 710, 740, 784, 980, 994, 1036, 1120, 1136, 1184, 1295, 1420, 1480, 1568, 1813, 1960, 1988, 2072, 2272, 2485, 2590, 2627, 2840, 2960, 3479, 3626, 3920, 3976, 4144, 4970, 5180, 5254, 5680, 5920, 6958, 7252, 7840, 7952, 8288, 9065, 9940, 10360, 10508, 11360, 13135, 13916, 14504, 15904, 17395, 18130, 18389, 19880, 20720, 21016, 26270, 27832, 29008, 34790, 36260, 36778, 39760, 41440, 42032, 52540, 55664, 58016, 69580, 72520, 73556, 79520, 84064, 91945, 105080, 111328, 128723, 139160, 145040, 147112, 183890, 210160, 257446, 278320, 290080, 294224, 367780, 420320, 514892, 556640, 588448, 643615, 735560, 1029784, 1287230, 1471120, 2059568, 2574460, 2942240, 4119136, 5148920, 10297840, 20595680]

約数ペア:

[(1, 20595680), (2, 10297840), (4, 5148920), (5, 4119136), (7, 2942240), (8, 2574460), (10, 2059568), (14, 1471120), (16, 1287230), (20, 1029784), (28, 735560), (32, 643615), (35, 588448), (37, 556640), (40, 514892), (49, 420320), (56, 367780), (70, 294224), (71, 290080), (74, 278320), (80, 257446), (98, 210160), (112, 183890), (140, 147112), (142, 145040), (148, 139160), (160, 128723), (185, 111328), (196, 105080), (224, 91945), (245, 84064), (259, 79520), (280, 73556), (284, 72520), (296, 69580), (355, 58016), (370, 55664), (392, 52540), (490, 42032), (497, 41440), (518, 39760), (560, 36778), (568, 36260), (592, 34790), (710, 29008), (740, 27832), (784, 26270), (980, 21016), (994, 20720), (1036, 19880), (1120, 18389), (1136, 18130), (1184, 17395), (1295, 15904), (1420, 14504), (1480, 13916), (1568, 13135), (1813, 11360), (1960, 10508), (1988, 10360), (2072, 9940), (2272, 9065), (2485, 8288), (2590, 7952), (2627, 7840), (2840, 7252), (2960, 6958), (3479, 5920), (3626, 5680), (3920, 5254), (3976, 5180), (4144, 4970)]