21890680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2113}}^1$

素因数の和:2168

約数の個数: 64

約数和(自身を含む): 57839040

約数和(自身を除く): 35948360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2072, 2113, 2590, 4226, 5180, 8452, 10360, 10565, 14791, 16904, 21130, 29582, 42260, 59164, 73955, 78181, 84520, 118328, 147910, 156362, 295820, 312724, 390905, 547267, 591640, 625448, 781810, 1094534, 1563620, 2189068, 2736335, 3127240, 4378136, 5472670, 10945340, 21890680]

約数ペア:

[(1, 21890680), (2, 10945340), (4, 5472670), (5, 4378136), (7, 3127240), (8, 2736335), (10, 2189068), (14, 1563620), (20, 1094534), (28, 781810), (35, 625448), (37, 591640), (40, 547267), (56, 390905), (70, 312724), (74, 295820), (140, 156362), (148, 147910), (185, 118328), (259, 84520), (280, 78181), (296, 73955), (370, 59164), (518, 42260), (740, 29582), (1036, 21130), (1295, 16904), (1480, 14791), (2072, 10565), (2113, 10360), (2590, 8452), (4226, 5180)]