20404965

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{521}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 37483776

約数和(自身を除く): 17078811

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 373, 521, 1119, 1563, 1865, 2605, 2611, 3647, 5595, 7815, 7833, 10941, 13055, 18235, 39165, 54705, 194333, 582999, 971665, 1360331, 2914995, 4080993, 6801655, 20404965]

約数ペア:

[(1, 20404965), (3, 6801655), (5, 4080993), (7, 2914995), (15, 1360331), (21, 971665), (35, 582999), (105, 194333), (373, 54705), (521, 39165), (1119, 18235), (1563, 13055), (1865, 10941), (2605, 7833), (2611, 7815), (3647, 5595)]