20900054

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1381}}^1$

素因数の和:1460

約数の個数: 32

約数和(自身を含む): 38209536

約数和(自身を除く): 17309482

約数列:

[1, 2, 7, 14, 23, 46, 47, 94, 161, 322, 329, 658, 1081, 1381, 2162, 2762, 7567, 9667, 15134, 19334, 31763, 63526, 64907, 129814, 222341, 444682, 454349, 908698, 1492861, 2985722, 10450027, 20900054]

約数ペア:

[(1, 20900054), (2, 10450027), (7, 2985722), (14, 1492861), (23, 908698), (46, 454349), (47, 444682), (94, 222341), (161, 129814), (322, 64907), (329, 63526), (658, 31763), (1081, 19334), (1381, 15134), (2162, 9667), (2762, 7567)]