21840805

素因数分解:

$5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{2749}}^1$

素因数の和:2988

約数の個数: 16

約数和(自身を含む): 30096000

約数和(自身を除く): 8255195

約数列:

[1, 5, 7, 35, 227, 1135, 1589, 2749, 7945, 13745, 19243, 96215, 624023, 3120115, 4368161, 21840805]

約数ペア:

[(1, 21840805), (5, 4368161), (7, 3120115), (35, 624023), (227, 96215), (1135, 19243), (1589, 13745), (2749, 7945)]