21492675

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{1873}}^1$

素因数の和:1909

約数の個数: 48

約数和(自身を含む): 41827680

約数和(自身を除く): 20335005

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 135, 153, 225, 255, 425, 459, 675, 765, 1275, 1873, 2295, 3825, 5619, 9365, 11475, 16857, 28095, 31841, 46825, 50571, 84285, 95523, 140475, 159205, 252855, 286569, 421425, 477615, 796025, 859707, 1264275, 1432845, 2388075, 4298535, 7164225, 21492675]

約数ペア:

[(1, 21492675), (3, 7164225), (5, 4298535), (9, 2388075), (15, 1432845), (17, 1264275), (25, 859707), (27, 796025), (45, 477615), (51, 421425), (75, 286569), (85, 252855), (135, 159205), (153, 140475), (225, 95523), (255, 84285), (425, 50571), (459, 46825), (675, 31841), (765, 28095), (1275, 16857), (1873, 11475), (2295, 9365), (3825, 5619)]