20384145

素因数分解:

$3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1051}}^1$

素因数の和:1493

約数の個数: 24

約数和(自身を含む): 35448192

約数和(自身を除く): 15064047

約数列:

[1, 3, 5, 9, 15, 45, 431, 1051, 1293, 2155, 3153, 3879, 5255, 6465, 9459, 15765, 19395, 47295, 452981, 1358943, 2264905, 4076829, 6794715, 20384145]

約数ペア:

[(1, 20384145), (3, 6794715), (5, 4076829), (9, 2264905), (15, 1358943), (45, 452981), (431, 47295), (1051, 19395), (1293, 15765), (2155, 9459), (3153, 6465), (3879, 5255)]