20988901

素因数分解:

${\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{1097}}^1$

素因数の和:1188

約数の個数: 12

約数和(自身を含む): 22590252

約数和(自身を除く): 1601351

約数列:

[1, 19, 53, 361, 1007, 1097, 19133, 20843, 58141, 396017, 1104679, 20988901]

約数ペア:

[(1, 20988901), (19, 1104679), (53, 396017), (361, 58141), (1007, 20843), (1097, 19133)]