19801106

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{5479}}^1$

素因数の和:5633

約数の個数: 16

約数和(自身を含む): 32222400

約数和(自身を除く): 12421294

約数列:

[1, 2, 13, 26, 139, 278, 1807, 3614, 5479, 10958, 71227, 142454, 761581, 1523162, 9900553, 19801106]

約数ペア:

[(1, 19801106), (2, 9900553), (13, 1523162), (26, 761581), (139, 142454), (278, 71227), (1807, 10958), (3614, 5479)]