20209500

素因数分解:

$2^2\times 3^4\times 5^3\times {\mathrm{499}}^1$

素因数の和:530

約数の個数: 120

約数和(自身を含む): 66066000

約数和(自身を除く): 45856500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 125, 135, 150, 162, 180, 225, 250, 270, 300, 324, 375, 405, 450, 499, 500, 540, 675, 750, 810, 900, 998, 1125, 1350, 1497, 1500, 1620, 1996, 2025, 2250, 2495, 2700, 2994, 3375, 4050, 4491, 4500, 4990, 5988, 6750, 7485, 8100, 8982, 9980, 10125, 12475, 13473, 13500, 14970, 17964, 20250, 22455, 24950, 26946, 29940, 37425, 40419, 40500, 44910, 49900, 53892, 62375, 67365, 74850, 80838, 89820, 112275, 124750, 134730, 149700, 161676, 187125, 202095, 224550, 249500, 269460, 336825, 374250, 404190, 449100, 561375, 673650, 748500, 808380, 1010475, 1122750, 1347300, 1684125, 2020950, 2245500, 3368250, 4041900, 5052375, 6736500, 10104750, 20209500]

約数ペア:

[(1, 20209500), (2, 10104750), (3, 6736500), (4, 5052375), (5, 4041900), (6, 3368250), (9, 2245500), (10, 2020950), (12, 1684125), (15, 1347300), (18, 1122750), (20, 1010475), (25, 808380), (27, 748500), (30, 673650), (36, 561375), (45, 449100), (50, 404190), (54, 374250), (60, 336825), (75, 269460), (81, 249500), (90, 224550), (100, 202095), (108, 187125), (125, 161676), (135, 149700), (150, 134730), (162, 124750), (180, 112275), (225, 89820), (250, 80838), (270, 74850), (300, 67365), (324, 62375), (375, 53892), (405, 49900), (450, 44910), (499, 40500), (500, 40419), (540, 37425), (675, 29940), (750, 26946), (810, 24950), (900, 22455), (998, 20250), (1125, 17964), (1350, 14970), (1497, 13500), (1500, 13473), (1620, 12475), (1996, 10125), (2025, 9980), (2250, 8982), (2495, 8100), (2700, 7485), (2994, 6750), (3375, 5988), (4050, 4990), (4491, 4500)]