20128923

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2221}}^1$

素因数の和:2299

約数の個数: 24

約数和(自身を含む): 31196880

約数和(自身を除く): 11067957

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2221, 3021, 6663, 9063, 19989, 42199, 117713, 126597, 353139, 379791, 1059417, 2236547, 6709641, 20128923]

約数ペア:

[(1, 20128923), (3, 6709641), (9, 2236547), (19, 1059417), (53, 379791), (57, 353139), (159, 126597), (171, 117713), (477, 42199), (1007, 19989), (2221, 9063), (3021, 6663)]