21961316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{2591}}^1$

素因数の和:2771

約数の個数: 24

約数和(自身を含む): 41658624

約数和(自身を除く): 19697308

約数列:

[1, 2, 4, 13, 26, 52, 163, 326, 652, 2119, 2591, 4238, 5182, 8476, 10364, 33683, 67366, 134732, 422333, 844666, 1689332, 5490329, 10980658, 21961316]

約数ペア:

[(1, 21961316), (2, 10980658), (4, 5490329), (13, 1689332), (26, 844666), (52, 422333), (163, 134732), (326, 67366), (652, 33683), (2119, 10364), (2591, 8476), (4238, 5182)]