20654985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1451}}^1$

素因数の和:1545

約数の個数: 32

約数和(自身を含む): 36102528

約数和(自身を除く): 15447543

約数列:

[1, 3, 5, 13, 15, 39, 65, 73, 195, 219, 365, 949, 1095, 1451, 2847, 4353, 4745, 7255, 14235, 18863, 21765, 56589, 94315, 105923, 282945, 317769, 529615, 1376999, 1588845, 4130997, 6884995, 20654985]

約数ペア:

[(1, 20654985), (3, 6884995), (5, 4130997), (13, 1588845), (15, 1376999), (39, 529615), (65, 317769), (73, 282945), (195, 105923), (219, 94315), (365, 56589), (949, 21765), (1095, 18863), (1451, 14235), (2847, 7255), (4353, 4745)]