19610990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{997}}^1$

素因数の和:1292

約数の個数: 32

約数和(自身を含む): 40526784

約数和(自身を除く): 20915794

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 281, 562, 997, 1405, 1967, 1994, 2810, 3934, 4985, 6979, 9835, 9970, 13958, 19670, 34895, 69790, 280157, 560314, 1400785, 1961099, 2801570, 3922198, 9805495, 19610990]

約数ペア:

[(1, 19610990), (2, 9805495), (5, 3922198), (7, 2801570), (10, 1961099), (14, 1400785), (35, 560314), (70, 280157), (281, 69790), (562, 34895), (997, 19670), (1405, 13958), (1967, 9970), (1994, 9835), (2810, 6979), (3934, 4985)]