85990000

素因数分解:

$2^4\times 5^4\times {\mathrm{8599}}^1$

素因数の和:8627

約数の個数: 50

約数和(自身を含む): 208214600

約数和(自身を除く): 122224600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 8599, 10000, 17198, 34396, 42995, 68792, 85990, 137584, 171980, 214975, 343960, 429950, 687920, 859900, 1074875, 1719800, 2149750, 3439600, 4299500, 5374375, 8599000, 10748750, 17198000, 21497500, 42995000, 85990000]

約数ペア:

[(1, 85990000), (2, 42995000), (4, 21497500), (5, 17198000), (8, 10748750), (10, 8599000), (16, 5374375), (20, 4299500), (25, 3439600), (40, 2149750), (50, 1719800), (80, 1074875), (100, 859900), (125, 687920), (200, 429950), (250, 343960), (400, 214975), (500, 171980), (625, 137584), (1000, 85990), (1250, 68792), (2000, 42995), (2500, 34396), (5000, 17198), (8599, 10000)]