20245500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{409}}^1$

素因数の和:445

約数の個数: 144

約数和(自身を含む): 69844320

約数和(自身を除く): 49598820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 90, 99, 100, 110, 125, 132, 150, 165, 180, 198, 220, 225, 250, 275, 300, 330, 375, 396, 409, 450, 495, 500, 550, 660, 750, 818, 825, 900, 990, 1100, 1125, 1227, 1375, 1500, 1636, 1650, 1980, 2045, 2250, 2454, 2475, 2750, 3300, 3681, 4090, 4125, 4499, 4500, 4908, 4950, 5500, 6135, 7362, 8180, 8250, 8998, 9900, 10225, 12270, 12375, 13497, 14724, 16500, 17996, 18405, 20450, 22495, 24540, 24750, 26994, 30675, 36810, 40491, 40900, 44990, 49500, 51125, 53988, 61350, 67485, 73620, 80982, 89980, 92025, 102250, 112475, 122700, 134970, 153375, 161964, 184050, 202455, 204500, 224950, 269940, 306750, 337425, 368100, 404910, 449900, 460125, 562375, 613500, 674850, 809820, 920250, 1012275, 1124750, 1349700, 1687125, 1840500, 2024550, 2249500, 3374250, 4049100, 5061375, 6748500, 10122750, 20245500]

約数ペア:

[(1, 20245500), (2, 10122750), (3, 6748500), (4, 5061375), (5, 4049100), (6, 3374250), (9, 2249500), (10, 2024550), (11, 1840500), (12, 1687125), (15, 1349700), (18, 1124750), (20, 1012275), (22, 920250), (25, 809820), (30, 674850), (33, 613500), (36, 562375), (44, 460125), (45, 449900), (50, 404910), (55, 368100), (60, 337425), (66, 306750), (75, 269940), (90, 224950), (99, 204500), (100, 202455), (110, 184050), (125, 161964), (132, 153375), (150, 134970), (165, 122700), (180, 112475), (198, 102250), (220, 92025), (225, 89980), (250, 80982), (275, 73620), (300, 67485), (330, 61350), (375, 53988), (396, 51125), (409, 49500), (450, 44990), (495, 40900), (500, 40491), (550, 36810), (660, 30675), (750, 26994), (818, 24750), (825, 24540), (900, 22495), (990, 20450), (1100, 18405), (1125, 17996), (1227, 16500), (1375, 14724), (1500, 13497), (1636, 12375), (1650, 12270), (1980, 10225), (2045, 9900), (2250, 8998), (2454, 8250), (2475, 8180), (2750, 7362), (3300, 6135), (3681, 5500), (4090, 4950), (4125, 4908), (4499, 4500)]