21183928

素因数分解:

$2^3\times {\mathrm{683}}^1\times {\mathrm{3877}}^1$

素因数の和:4566

約数の個数: 16

約数和(自身を含む): 39788280

約数和(自身を除く): 18604352

約数列:

[1, 2, 4, 8, 683, 1366, 2732, 3877, 5464, 7754, 15508, 31016, 2647991, 5295982, 10591964, 21183928]

約数ペア:

[(1, 21183928), (2, 10591964), (4, 5295982), (8, 2647991), (683, 31016), (1366, 15508), (2732, 7754), (3877, 5464)]