21478870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8293}}^1$

素因数の和:8344

約数の個数: 32

約数和(自身を含む): 45384768

約数和(自身を除く): 23905898

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 74, 185, 259, 370, 518, 1295, 2590, 8293, 16586, 41465, 58051, 82930, 116102, 290255, 306841, 580510, 613682, 1534205, 2147887, 3068410, 4295774, 10739435, 21478870]

約数ペア:

[(1, 21478870), (2, 10739435), (5, 4295774), (7, 3068410), (10, 2147887), (14, 1534205), (35, 613682), (37, 580510), (70, 306841), (74, 290255), (185, 116102), (259, 82930), (370, 58051), (518, 41465), (1295, 16586), (2590, 8293)]