21393.00000000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{7459}}^1$

素因数の和:7487

約数の個数: 64

約数和(自身を含む): 139651200

約数和(自身を除く): 87438200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 140, 175, 200, 250, 280, 350, 500, 700, 875, 1000, 1400, 1750, 3500, 7000, 7459, 14918, 29836, 37295, 52213, 59672, 74590, 104426, 149180, 186475, 208852, 261065, 298360, 372950, 417704, 522130, 745900, 932375, 1044260, 1305325, 1491800, 1864750, 2088520, 2610650, 3729500, 5221300, 6526625, 7459000, 10442600, 13053250, 26106500, 52213000]

約数ペア:

[(1, 52213000), (2, 26106500), (4, 13053250), (5, 10442600), (7, 7459000), (8, 6526625), (10, 5221300), (14, 3729500), (20, 2610650), (25, 2088520), (28, 1864750), (35, 1491800), (40, 1305325), (50, 1044260), (56, 932375), (70, 745900), (100, 522130), (125, 417704), (140, 372950), (175, 298360), (200, 261065), (250, 208852), (280, 186475), (350, 149180), (500, 104426), (700, 74590), (875, 59672), (1000, 52213), (1400, 37295), (1750, 29836), (3500, 14918), (7000, 7459)]