28738885

素因数分解:

$5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1277}}^1$

素因数の和:1932

約数の個数: 16

約数和(自身を含む): 39505536

約数和(自身を除く): 10766651

約数列:

[1, 5, 7, 35, 643, 1277, 3215, 4501, 6385, 8939, 22505, 44695, 821111, 4105555, 5747777, 28738885]

約数ペア:

[(1, 28738885), (5, 5747777), (7, 4105555), (35, 821111), (643, 44695), (1277, 22505), (3215, 8939), (4501, 6385)]