20625000

素因数分解:

$2^3\times 3^1\times 5^7\times {\mathrm{11}}^1$

素因数の和:55

約数の個数: 128

約数和(自身を含む): 70312320

約数和(自身を除く): 49687320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 25, 30, 33, 40, 44, 50, 55, 60, 66, 75, 88, 100, 110, 120, 125, 132, 150, 165, 200, 220, 250, 264, 275, 300, 330, 375, 440, 500, 550, 600, 625, 660, 750, 825, 1000, 1100, 1250, 1320, 1375, 1500, 1650, 1875, 2200, 2500, 2750, 3000, 3125, 3300, 3750, 4125, 5000, 5500, 6250, 6600, 6875, 7500, 8250, 9375, 11000, 12500, 13750, 15000, 15625, 16500, 18750, 20625, 25000, 27500, 31250, 33000, 34375, 37500, 41250, 46875, 55000, 62500, 68750, 75000, 78125, 82500, 93750, 103125, 125000, 137500, 156250, 165000, 171875, 187500, 206250, 234375, 275000, 312500, 343750, 375000, 412500, 468750, 515625, 625000, 687500, 825000, 859375, 937500, 1031250, 1375000, 1718750, 1875000, 2062500, 2578125, 3437500, 4125000, 5156250, 6875000, 10312500, 20625000]

約数ペア:

[(1, 20625000), (2, 10312500), (3, 6875000), (4, 5156250), (5, 4125000), (6, 3437500), (8, 2578125), (10, 2062500), (11, 1875000), (12, 1718750), (15, 1375000), (20, 1031250), (22, 937500), (24, 859375), (25, 825000), (30, 687500), (33, 625000), (40, 515625), (44, 468750), (50, 412500), (55, 375000), (60, 343750), (66, 312500), (75, 275000), (88, 234375), (100, 206250), (110, 187500), (120, 171875), (125, 165000), (132, 156250), (150, 137500), (165, 125000), (200, 103125), (220, 93750), (250, 82500), (264, 78125), (275, 75000), (300, 68750), (330, 62500), (375, 55000), (440, 46875), (500, 41250), (550, 37500), (600, 34375), (625, 33000), (660, 31250), (750, 27500), (825, 25000), (1000, 20625), (1100, 18750), (1250, 16500), (1320, 15625), (1375, 15000), (1500, 13750), (1650, 12500), (1875, 11000), (2200, 9375), (2500, 8250), (2750, 7500), (3000, 6875), (3125, 6600), (3300, 6250), (3750, 5500), (4125, 5000)]