20255640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:257

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 45062760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 41, 46, 60, 69, 82, 92, 115, 120, 123, 138, 164, 179, 184, 205, 230, 246, 276, 328, 345, 358, 410, 460, 492, 537, 552, 615, 690, 716, 820, 895, 920, 943, 984, 1074, 1230, 1380, 1432, 1640, 1790, 1886, 2148, 2460, 2685, 2760, 2829, 3580, 3772, 4117, 4296, 4715, 4920, 5370, 5658, 7160, 7339, 7544, 8234, 9430, 10740, 11316, 12351, 14145, 14678, 16468, 18860, 20585, 21480, 22017, 22632, 24702, 28290, 29356, 32936, 36695, 37720, 41170, 44034, 49404, 56580, 58712, 61755, 73390, 82340, 88068, 98808, 110085, 113160, 123510, 146780, 164680, 168797, 176136, 220170, 247020, 293560, 337594, 440340, 494040, 506391, 675188, 843985, 880680, 1012782, 1350376, 1687970, 2025564, 2531955, 3375940, 4051128, 5063910, 6751880, 10127820, 20255640]

約数ペア:

[(1, 20255640), (2, 10127820), (3, 6751880), (4, 5063910), (5, 4051128), (6, 3375940), (8, 2531955), (10, 2025564), (12, 1687970), (15, 1350376), (20, 1012782), (23, 880680), (24, 843985), (30, 675188), (40, 506391), (41, 494040), (46, 440340), (60, 337594), (69, 293560), (82, 247020), (92, 220170), (115, 176136), (120, 168797), (123, 164680), (138, 146780), (164, 123510), (179, 113160), (184, 110085), (205, 98808), (230, 88068), (246, 82340), (276, 73390), (328, 61755), (345, 58712), (358, 56580), (410, 49404), (460, 44034), (492, 41170), (537, 37720), (552, 36695), (615, 32936), (690, 29356), (716, 28290), (820, 24702), (895, 22632), (920, 22017), (943, 21480), (984, 20585), (1074, 18860), (1230, 16468), (1380, 14678), (1432, 14145), (1640, 12351), (1790, 11316), (1886, 10740), (2148, 9430), (2460, 8234), (2685, 7544), (2760, 7339), (2829, 7160), (3580, 5658), (3772, 5370), (4117, 4920), (4296, 4715)]