19800722

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{1489}}^1$

素因数の和:1661

約数の個数: 16

約数和(自身を含む): 30485400

約数和(自身を除く): 10684678

約数列:

[1, 2, 61, 109, 122, 218, 1489, 2978, 6649, 13298, 90829, 162301, 181658, 324602, 9900361, 19800722]

約数ペア:

[(1, 19800722), (2, 9900361), (61, 324602), (109, 181658), (122, 162301), (218, 90829), (1489, 13298), (2978, 6649)]