21974836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{3877}}^1$

素因数の和:4003

約数の個数: 24

約数和(自身を含む): 41804840

約数和(自身を除く): 19830004

約数列:

[1, 2, 4, 13, 26, 52, 109, 218, 436, 1417, 2834, 3877, 5668, 7754, 15508, 50401, 100802, 201604, 422593, 845186, 1690372, 5493709, 10987418, 21974836]

約数ペア:

[(1, 21974836), (2, 10987418), (4, 5493709), (13, 1690372), (26, 845186), (52, 422593), (109, 201604), (218, 100802), (436, 50401), (1417, 15508), (2834, 7754), (3877, 5668)]