20977269

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1721}}^1$

素因数の和:1980

約数の個数: 16

約数和(自身を含む): 29756160

約数和(自身を除く): 8778891

約数列:

[1, 3, 17, 51, 239, 717, 1721, 4063, 5163, 12189, 29257, 87771, 411319, 1233957, 6992423, 20977269]

約数ペア:

[(1, 20977269), (3, 6992423), (17, 1233957), (51, 411319), (239, 87771), (717, 29257), (1721, 12189), (4063, 5163)]