19683680

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2861}}^1$

素因数の和:2919

約数の個数: 48

約数和(自身を含む): 47600784

約数和(自身を除く): 27917104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2861, 3440, 5722, 6880, 11444, 14305, 22888, 28610, 45776, 57220, 91552, 114440, 123023, 228880, 246046, 457760, 492092, 615115, 984184, 1230230, 1968368, 2460460, 3936736, 4920920, 9841840, 19683680]

約数ペア:

[(1, 19683680), (2, 9841840), (4, 4920920), (5, 3936736), (8, 2460460), (10, 1968368), (16, 1230230), (20, 984184), (32, 615115), (40, 492092), (43, 457760), (80, 246046), (86, 228880), (160, 123023), (172, 114440), (215, 91552), (344, 57220), (430, 45776), (688, 28610), (860, 22888), (1376, 14305), (1720, 11444), (2861, 6880), (3440, 5722)]