21689013

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{13121}}^1$

素因数の和:13172

約数の個数: 16

約数和(自身を含む): 31492800

約数和(自身を除く): 9803787

約数列:

[1, 3, 19, 29, 57, 87, 551, 1653, 13121, 39363, 249299, 380509, 747897, 1141527, 7229671, 21689013]

約数ペア:

[(1, 21689013), (3, 7229671), (19, 1141527), (29, 747897), (57, 380509), (87, 249299), (551, 39363), (1653, 13121)]