201998000

素因数分解:

$2^4\times 5^3\times {\mathrm{100999}}^1$

素因数の和:101022

約数の個数: 40

約数和(自身を含む): 488436000

約数和(自身を除く): 286438000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 100999, 201998, 403996, 504995, 807992, 1009990, 1615984, 2019980, 2524975, 4039960, 5049950, 8079920, 10099900, 12624875, 20199800, 25249750, 40399600, 50499500, 100999000, 201998000]

約数ペア:

[(1, 201998000), (2, 100999000), (4, 50499500), (5, 40399600), (8, 25249750), (10, 20199800), (16, 12624875), (20, 10099900), (25, 8079920), (40, 5049950), (50, 4039960), (80, 2524975), (100, 2019980), (125, 1615984), (200, 1009990), (250, 807992), (400, 504995), (500, 403996), (1000, 201998), (2000, 100999)]