20806725

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16319}}^1$

素因数の和:16349

約数の個数: 24

約数和(自身を含む): 36426240

約数和(自身を除く): 15619515

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16319, 48957, 81595, 244785, 277423, 407975, 832269, 1223925, 1387115, 4161345, 6935575, 20806725]

約数ペア:

[(1, 20806725), (3, 6935575), (5, 4161345), (15, 1387115), (17, 1223925), (25, 832269), (51, 407975), (75, 277423), (85, 244785), (255, 81595), (425, 48957), (1275, 16319)]