19935741

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1481}}^1$

素因数の和:2132

約数の個数: 16

約数和(自身を含む): 30446208

約数和(自身を除く): 10510467

約数列:

[1, 3, 7, 21, 641, 1481, 1923, 4443, 4487, 10367, 13461, 31101, 949321, 2847963, 6645247, 19935741]

約数ペア:

[(1, 19935741), (3, 6645247), (7, 2847963), (21, 949321), (641, 31101), (1481, 13461), (1923, 10367), (4443, 4487)]