20538812

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{15607}}^1$

素因数の和:15665

約数の個数: 24

約数和(自身を含む): 41954304

約数和(自身を除く): 21415492

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 15607, 31214, 62428, 109249, 218498, 436996, 733529, 1467058, 2934116, 5134703, 10269406, 20538812]

約数ペア:

[(1, 20538812), (2, 10269406), (4, 5134703), (7, 2934116), (14, 1467058), (28, 733529), (47, 436996), (94, 218498), (188, 109249), (329, 62428), (658, 31214), (1316, 15607)]