19780878

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{253601}}^1$

素因数の和:253619

約数の個数: 16

約数和(自身を含む): 42605136

約数和(自身を除く): 22824258

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 253601, 507202, 760803, 1521606, 3296813, 6593626, 9890439, 19780878]

約数ペア:

[(1, 19780878), (2, 9890439), (3, 6593626), (6, 3296813), (13, 1521606), (26, 760803), (39, 507202), (78, 253601)]