28890280

素因数分解:

$2^3\times 5^1\times {\mathrm{722257}}^1$

素因数の和:722268

約数の個数: 16

約数和(自身を含む): 65003220

約数和(自身を除く): 36112940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 722257, 1444514, 2889028, 3611285, 5778056, 7222570, 14445140, 28890280]

約数ペア:

[(1, 28890280), (2, 14445140), (4, 7222570), (5, 5778056), (8, 3611285), (10, 2889028), (20, 1444514), (40, 722257)]