20986982

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{6991}}^1$

素因数の和:7091

約数の個数: 16

約数和(自身を含む): 33561600

約数和(自身を除く): 12574618

約数列:

[1, 2, 19, 38, 79, 158, 1501, 3002, 6991, 13982, 132829, 265658, 552289, 1104578, 10493491, 20986982]

約数ペア:

[(1, 20986982), (2, 10493491), (19, 1104578), (38, 552289), (79, 265658), (158, 132829), (1501, 13982), (3002, 6991)]