21580790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{28027}}^1$

素因数の和:28052

約数の個数: 32

約数和(自身を含む): 48432384

約数和(自身を除く): 26851594

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 28027, 56054, 140135, 196189, 280270, 308297, 392378, 616594, 980945, 1541485, 1961890, 2158079, 3082970, 4316158, 10790395, 21580790]

約数ペア:

[(1, 21580790), (2, 10790395), (5, 4316158), (7, 3082970), (10, 2158079), (11, 1961890), (14, 1541485), (22, 980945), (35, 616594), (55, 392378), (70, 308297), (77, 280270), (110, 196189), (154, 140135), (385, 56054), (770, 28027)]