16221621

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 25280640

約数和(自身を除く): 9059019

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 569, 663, 731, 1677, 1707, 2193, 7397, 9503, 9673, 22191, 24467, 28509, 29019, 73401, 125749, 318071, 377247, 415939, 954213, 1247817, 5407207, 16221621]

約数ペア:

[(1, 16221621), (3, 5407207), (13, 1247817), (17, 954213), (39, 415939), (43, 377247), (51, 318071), (129, 125749), (221, 73401), (559, 29019), (569, 28509), (663, 24467), (731, 22191), (1677, 9673), (1707, 9503), (2193, 7397)]