21350000

素因数分解:

$2^4\times 5^5\times 7^1\times {\mathrm{61}}^1$

素因数の和:101

約数の個数: 120

約数和(自身を含む): 60058656

約数和(自身を除く): 38708656

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 61, 70, 80, 100, 112, 122, 125, 140, 175, 200, 244, 250, 280, 305, 350, 400, 427, 488, 500, 560, 610, 625, 700, 854, 875, 976, 1000, 1220, 1250, 1400, 1525, 1708, 1750, 2000, 2135, 2440, 2500, 2800, 3050, 3125, 3416, 3500, 4270, 4375, 4880, 5000, 6100, 6250, 6832, 7000, 7625, 8540, 8750, 10000, 10675, 12200, 12500, 14000, 15250, 17080, 17500, 21350, 21875, 24400, 25000, 30500, 34160, 35000, 38125, 42700, 43750, 50000, 53375, 61000, 70000, 76250, 85400, 87500, 106750, 122000, 152500, 170800, 175000, 190625, 213500, 266875, 305000, 350000, 381250, 427000, 533750, 610000, 762500, 854000, 1067500, 1334375, 1525000, 2135000, 2668750, 3050000, 4270000, 5337500, 10675000, 21350000]

約数ペア:

[(1, 21350000), (2, 10675000), (4, 5337500), (5, 4270000), (7, 3050000), (8, 2668750), (10, 2135000), (14, 1525000), (16, 1334375), (20, 1067500), (25, 854000), (28, 762500), (35, 610000), (40, 533750), (50, 427000), (56, 381250), (61, 350000), (70, 305000), (80, 266875), (100, 213500), (112, 190625), (122, 175000), (125, 170800), (140, 152500), (175, 122000), (200, 106750), (244, 87500), (250, 85400), (280, 76250), (305, 70000), (350, 61000), (400, 53375), (427, 50000), (488, 43750), (500, 42700), (560, 38125), (610, 35000), (625, 34160), (700, 30500), (854, 25000), (875, 24400), (976, 21875), (1000, 21350), (1220, 17500), (1250, 17080), (1400, 15250), (1525, 14000), (1708, 12500), (1750, 12200), (2000, 10675), (2135, 10000), (2440, 8750), (2500, 8540), (2800, 7625), (3050, 7000), (3125, 6832), (3416, 6250), (3500, 6100), (4270, 5000), (4375, 4880)]