25887500

素因数分解:

$2^2\times 5^5\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 60152400

約数和(自身を除く): 34264900

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 109, 125, 190, 218, 250, 380, 436, 475, 500, 545, 625, 950, 1090, 1250, 1900, 2071, 2180, 2375, 2500, 2725, 3125, 4142, 4750, 5450, 6250, 8284, 9500, 10355, 10900, 11875, 12500, 13625, 20710, 23750, 27250, 41420, 47500, 51775, 54500, 59375, 68125, 103550, 118750, 136250, 207100, 237500, 258875, 272500, 340625, 517750, 681250, 1035500, 1294375, 1362500, 2588750, 5177500, 6471875, 12943750, 25887500]

約数ペア:

[(1, 25887500), (2, 12943750), (4, 6471875), (5, 5177500), (10, 2588750), (19, 1362500), (20, 1294375), (25, 1035500), (38, 681250), (50, 517750), (76, 340625), (95, 272500), (100, 258875), (109, 237500), (125, 207100), (190, 136250), (218, 118750), (250, 103550), (380, 68125), (436, 59375), (475, 54500), (500, 51775), (545, 47500), (625, 41420), (950, 27250), (1090, 23750), (1250, 20710), (1900, 13625), (2071, 12500), (2180, 11875), (2375, 10900), (2500, 10355), (2725, 9500), (3125, 8284), (4142, 6250), (4750, 5450)]