20871675

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{937}}^1$

素因数の和:970

約数の個数: 60

約数和(自身を含む): 42221256

約数和(自身を除く): 21349581

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 99, 135, 165, 225, 275, 297, 405, 495, 675, 825, 891, 937, 1485, 2025, 2475, 2811, 4455, 4685, 7425, 8433, 10307, 14055, 22275, 23425, 25299, 30921, 42165, 51535, 70275, 75897, 92763, 126495, 154605, 210825, 257675, 278289, 379485, 463815, 632475, 773025, 834867, 1391445, 1897425, 2319075, 4174335, 6957225, 20871675]

約数ペア:

[(1, 20871675), (3, 6957225), (5, 4174335), (9, 2319075), (11, 1897425), (15, 1391445), (25, 834867), (27, 773025), (33, 632475), (45, 463815), (55, 379485), (75, 278289), (81, 257675), (99, 210825), (135, 154605), (165, 126495), (225, 92763), (275, 75897), (297, 70275), (405, 51535), (495, 42165), (675, 30921), (825, 25299), (891, 23425), (937, 22275), (1485, 14055), (2025, 10307), (2475, 8433), (2811, 7425), (4455, 4685)]