21804195

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{739}}^1$

素因数の和:1035

約数の個数: 32

約数和(自身を含む): 40066560

約数和(自身を除く): 18262365

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 281, 739, 843, 1405, 1967, 2217, 3695, 4215, 5173, 5901, 9835, 11085, 15519, 25865, 29505, 77595, 207659, 622977, 1038295, 1453613, 3114885, 4360839, 7268065, 21804195]

約数ペア:

[(1, 21804195), (3, 7268065), (5, 4360839), (7, 3114885), (15, 1453613), (21, 1038295), (35, 622977), (105, 207659), (281, 77595), (739, 29505), (843, 25865), (1405, 15519), (1967, 11085), (2217, 9835), (3695, 5901), (4215, 5173)]