19996361

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1613}}^1$

素因数の和:1661

約数の個数: 24

約数和(自身を含む): 26495424

約数和(自身を除く): 6499063

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1613, 1771, 11291, 12397, 17743, 37099, 79037, 124201, 259693, 408089, 869407, 1817851, 2856623, 19996361]

約数ペア:

[(1, 19996361), (7, 2856623), (11, 1817851), (23, 869407), (49, 408089), (77, 259693), (161, 124201), (253, 79037), (539, 37099), (1127, 17743), (1613, 12397), (1771, 11291)]