69980000

素因数分解:

$2^5\times 5^4\times {\mathrm{3499}}^1$

素因数の和:3529

約数の個数: 60

約数和(自身を含む): 172210500

約数和(自身を除く): 102230500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 3499, 4000, 5000, 6998, 10000, 13996, 17495, 20000, 27992, 34990, 55984, 69980, 87475, 111968, 139960, 174950, 279920, 349900, 437375, 559840, 699800, 874750, 1399600, 1749500, 2186875, 2799200, 3499000, 4373750, 6998000, 8747500, 13996000, 17495000, 34990000, 69980000]

約数ペア:

[(1, 69980000), (2, 34990000), (4, 17495000), (5, 13996000), (8, 8747500), (10, 6998000), (16, 4373750), (20, 3499000), (25, 2799200), (32, 2186875), (40, 1749500), (50, 1399600), (80, 874750), (100, 699800), (125, 559840), (160, 437375), (200, 349900), (250, 279920), (400, 174950), (500, 139960), (625, 111968), (800, 87475), (1000, 69980), (1250, 55984), (2000, 34990), (2500, 27992), (3499, 20000), (4000, 17495), (5000, 13996), (6998, 10000)]