19801942

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{7057}}^1$

素因数の和:7143

約数の個数: 16

約数和(自身を含む): 31506912

約数和(自身を除く): 11704970

約数列:

[1, 2, 23, 46, 61, 122, 1403, 2806, 7057, 14114, 162311, 324622, 430477, 860954, 9900971, 19801942]

約数ペア:

[(1, 19801942), (2, 9900971), (23, 860954), (46, 430477), (61, 324622), (122, 162311), (1403, 14114), (2806, 7057)]