89995000

素因数分解:

$2^3\times 5^4\times {\mathrm{41}}^1\times {\mathrm{439}}^1$

素因数の和:506

約数の個数: 80

約数和(自身を含む): 216493200

約数和(自身を除く): 126498200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 439, 500, 625, 820, 878, 1000, 1025, 1250, 1640, 1756, 2050, 2195, 2500, 3512, 4100, 4390, 5000, 5125, 8200, 8780, 10250, 10975, 17560, 17999, 20500, 21950, 25625, 35998, 41000, 43900, 51250, 54875, 71996, 87800, 89995, 102500, 109750, 143992, 179990, 205000, 219500, 274375, 359980, 439000, 449975, 548750, 719960, 899950, 1097500, 1799900, 2195000, 2249875, 3599800, 4499750, 8999500, 11249375, 17999000, 22498750, 44997500, 89995000]

約数ペア:

[(1, 89995000), (2, 44997500), (4, 22498750), (5, 17999000), (8, 11249375), (10, 8999500), (20, 4499750), (25, 3599800), (40, 2249875), (41, 2195000), (50, 1799900), (82, 1097500), (100, 899950), (125, 719960), (164, 548750), (200, 449975), (205, 439000), (250, 359980), (328, 274375), (410, 219500), (439, 205000), (500, 179990), (625, 143992), (820, 109750), (878, 102500), (1000, 89995), (1025, 87800), (1250, 71996), (1640, 54875), (1756, 51250), (2050, 43900), (2195, 41000), (2500, 35998), (3512, 25625), (4100, 21950), (4390, 20500), (5000, 17999), (5125, 17560), (8200, 10975), (8780, 10250)]