8455000

素因数分解:

$2^3\times 5^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:134

約数の個数: 80

約数和(自身を含む): 21087000

約数和(自身を除く): 12632000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 89, 95, 100, 125, 152, 178, 190, 200, 250, 356, 380, 445, 475, 500, 625, 712, 760, 890, 950, 1000, 1250, 1691, 1780, 1900, 2225, 2375, 2500, 3382, 3560, 3800, 4450, 4750, 5000, 6764, 8455, 8900, 9500, 11125, 11875, 13528, 16910, 17800, 19000, 22250, 23750, 33820, 42275, 44500, 47500, 55625, 67640, 84550, 89000, 95000, 111250, 169100, 211375, 222500, 338200, 422750, 445000, 845500, 1056875, 1691000, 2113750, 4227500, 8455000]

約数ペア:

[(1, 8455000), (2, 4227500), (4, 2113750), (5, 1691000), (8, 1056875), (10, 845500), (19, 445000), (20, 422750), (25, 338200), (38, 222500), (40, 211375), (50, 169100), (76, 111250), (89, 95000), (95, 89000), (100, 84550), (125, 67640), (152, 55625), (178, 47500), (190, 44500), (200, 42275), (250, 33820), (356, 23750), (380, 22250), (445, 19000), (475, 17800), (500, 16910), (625, 13528), (712, 11875), (760, 11125), (890, 9500), (950, 8900), (1000, 8455), (1250, 6764), (1691, 5000), (1780, 4750), (1900, 4450), (2225, 3800), (2375, 3560), (2500, 3382)]