21348215

素因数分解:

$5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{2687}}^1$

素因数の和:2926

約数の個数: 16

約数和(自身を含む): 29417472

約数和(自身を除く): 8069257

約数列:

[1, 5, 7, 35, 227, 1135, 1589, 2687, 7945, 13435, 18809, 94045, 609949, 3049745, 4269643, 21348215]

約数ペア:

[(1, 21348215), (5, 4269643), (7, 3049745), (35, 609949), (227, 94045), (1135, 18809), (1589, 13435), (2687, 7945)]