21007805

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{46171}}^1$

素因数の和:46196

約数の個数: 16

約数和(自身を含む): 31027584

約数和(自身を除く): 10019779

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 46171, 230855, 323197, 600223, 1615985, 3001115, 4201561, 21007805]

約数ペア:

[(1, 21007805), (5, 4201561), (7, 3001115), (13, 1615985), (35, 600223), (65, 323197), (91, 230855), (455, 46171)]