71559080

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{6961}}^1$

素因数の和:7229

約数の個数: 32

約数和(自身を含む): 161657640

約数和(自身を除く): 90098560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 6961, 10280, 13922, 27844, 34805, 55688, 69610, 139220, 278440, 1788977, 3577954, 7155908, 8944885, 14311816, 17889770, 35779540, 71559080]

約数ペア:

[(1, 71559080), (2, 35779540), (4, 17889770), (5, 14311816), (8, 8944885), (10, 7155908), (20, 3577954), (40, 1788977), (257, 278440), (514, 139220), (1028, 69610), (1285, 55688), (2056, 34805), (2570, 27844), (5140, 13922), (6961, 10280)]