21021946

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{4951}}^1$

素因数の和:5157

約数の個数: 16

約数和(自身を含む): 34584768

約数和(自身を除く): 13562822

約数列:

[1, 2, 11, 22, 193, 386, 2123, 4246, 4951, 9902, 54461, 108922, 955543, 1911086, 10510973, 21021946]

約数ペア:

[(1, 21021946), (2, 10510973), (11, 1911086), (22, 955543), (193, 108922), (386, 54461), (2123, 9902), (4246, 4951)]