19681060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{547}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 47505024

約数和(自身を除く): 27823964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 547, 1028, 1094, 1285, 1799, 2188, 2570, 2735, 3598, 3829, 5140, 5470, 7196, 7658, 8995, 10940, 15316, 17990, 19145, 35980, 38290, 76580, 140579, 281158, 562316, 702895, 984053, 1405790, 1968106, 2811580, 3936212, 4920265, 9840530, 19681060]

約数ペア:

[(1, 19681060), (2, 9840530), (4, 4920265), (5, 3936212), (7, 2811580), (10, 1968106), (14, 1405790), (20, 984053), (28, 702895), (35, 562316), (70, 281158), (140, 140579), (257, 76580), (514, 38290), (547, 35980), (1028, 19145), (1094, 17990), (1285, 15316), (1799, 10940), (2188, 8995), (2570, 7658), (2735, 7196), (3598, 5470), (3829, 5140)]