638904530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{156979}}^1$

素因数の和:157034

約数の個数: 32

約数和(自身を含む): 1288491840

約数和(自身を除く): 649587310

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 74, 110, 185, 370, 407, 814, 2035, 4070, 156979, 313958, 784895, 1569790, 1726769, 3453538, 5808223, 8633845, 11616446, 17267690, 29041115, 58082230, 63890453, 127780906, 319452265, 638904530]

約数ペア:

[(1, 638904530), (2, 319452265), (5, 127780906), (10, 63890453), (11, 58082230), (22, 29041115), (37, 17267690), (55, 11616446), (74, 8633845), (110, 5808223), (185, 3453538), (370, 1726769), (407, 1569790), (814, 784895), (2035, 313958), (4070, 156979)]