291253240

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{20627}}^1$

素因数の和:20991

約数の個数: 32

約数和(自身を含む): 657208080

約数和(自身を除く): 365954840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 3530, 7060, 14120, 20627, 41254, 82508, 103135, 165016, 206270, 412540, 825080, 7281331, 14562662, 29125324, 36406655, 58250648, 72813310, 145626620, 291253240]

約数ペア:

[(1, 291253240), (2, 145626620), (4, 72813310), (5, 58250648), (8, 36406655), (10, 29125324), (20, 14562662), (40, 7281331), (353, 825080), (706, 412540), (1412, 206270), (1765, 165016), (2824, 103135), (3530, 82508), (7060, 41254), (14120, 20627)]