20207475

素因数分解:

$3^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{587}}^1$

素因数の和:626

約数の個数: 60

約数和(自身を含む): 39700584

約数和(自身を除く): 19493109

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 135, 153, 225, 255, 405, 425, 459, 587, 675, 765, 1275, 1377, 1761, 2025, 2295, 2935, 3825, 5283, 6885, 8805, 9979, 11475, 14675, 15849, 26415, 29937, 34425, 44025, 47547, 49895, 79245, 89811, 132075, 149685, 237735, 249475, 269433, 396225, 449055, 748425, 808299, 1188675, 1347165, 2245275, 4041495, 6735825, 20207475]

約数ペア:

[(1, 20207475), (3, 6735825), (5, 4041495), (9, 2245275), (15, 1347165), (17, 1188675), (25, 808299), (27, 748425), (45, 449055), (51, 396225), (75, 269433), (81, 249475), (85, 237735), (135, 149685), (153, 132075), (225, 89811), (255, 79245), (405, 49895), (425, 47547), (459, 44025), (587, 34425), (675, 29937), (765, 26415), (1275, 15849), (1377, 14675), (1761, 11475), (2025, 9979), (2295, 8805), (2935, 6885), (3825, 5283)]