21019425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{40037}}^1$

素因数の和:40057

約数の個数: 24

約数和(自身を含む): 39717696

約数和(自身を除く): 18698271

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 40037, 120111, 200185, 280259, 600555, 840777, 1000925, 1401295, 3002775, 4203885, 7006475, 21019425]

約数ペア:

[(1, 21019425), (3, 7006475), (5, 4203885), (7, 3002775), (15, 1401295), (21, 1000925), (25, 840777), (35, 600555), (75, 280259), (105, 200185), (175, 120111), (525, 40037)]