20987526

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{11621}}^1$

素因数の和:11676

約数の個数: 32

約数和(自身を含む): 49091328

約数和(自身を除く): 28103802

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 129, 258, 301, 602, 903, 1806, 11621, 23242, 34863, 69726, 81347, 162694, 244041, 488082, 499703, 999406, 1499109, 2998218, 3497921, 6995842, 10493763, 20987526]

約数ペア:

[(1, 20987526), (2, 10493763), (3, 6995842), (6, 3497921), (7, 2998218), (14, 1499109), (21, 999406), (42, 499703), (43, 488082), (86, 244041), (129, 162694), (258, 81347), (301, 69726), (602, 34863), (903, 23242), (1806, 11621)]