78172000

素因数分解:

$2^5\times 5^3\times {\mathrm{19543}}^1$

素因数の和:19568

約数の個数: 48

約数和(自身を含む): 192078432

約数和(自身を除く): 113906432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 19543, 39086, 78172, 97715, 156344, 195430, 312688, 390860, 488575, 625376, 781720, 977150, 1563440, 1954300, 2442875, 3126880, 3908600, 4885750, 7817200, 9771500, 15634400, 19543000, 39086000, 78172000]

約数ペア:

[(1, 78172000), (2, 39086000), (4, 19543000), (5, 15634400), (8, 9771500), (10, 7817200), (16, 4885750), (20, 3908600), (25, 3126880), (32, 2442875), (40, 1954300), (50, 1563440), (80, 977150), (100, 781720), (125, 625376), (160, 488575), (200, 390860), (250, 312688), (400, 195430), (500, 156344), (800, 97715), (1000, 78172), (2000, 39086), (4000, 19543)]