20513955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17761}}^1$

素因数の和:17787

約数の個数: 32

約数和(自身を含む): 40923648

約数和(自身を除く): 20409693

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 17761, 53283, 88805, 124327, 195371, 266415, 372981, 586113, 621635, 976855, 1367597, 1864905, 2930565, 4102791, 6837985, 20513955]

約数ペア:

[(1, 20513955), (3, 6837985), (5, 4102791), (7, 2930565), (11, 1864905), (15, 1367597), (21, 976855), (33, 621635), (35, 586113), (55, 372981), (77, 266415), (105, 195371), (165, 124327), (231, 88805), (385, 53283), (1155, 17761)]