7721320

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1409}}^1$

素因数の和:1557

約数の個数: 32

約数和(自身を含む): 17512200

約数和(自身を除く): 9790880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 1409, 2740, 2818, 5480, 5636, 7045, 11272, 14090, 28180, 56360, 193033, 386066, 772132, 965165, 1544264, 1930330, 3860660, 7721320]

約数ペア:

[(1, 7721320), (2, 3860660), (4, 1930330), (5, 1544264), (8, 965165), (10, 772132), (20, 386066), (40, 193033), (137, 56360), (274, 28180), (548, 14090), (685, 11272), (1096, 7045), (1370, 5636), (1409, 5480), (2740, 2818)]