25881947

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{991}}^1$

素因数の和:1059

約数の個数: 24

約数和(自身を含む): 33247872

約数和(自身を除く): 7365925

約数列:

[1, 7, 13, 41, 49, 91, 287, 533, 637, 991, 2009, 3731, 6937, 12883, 26117, 40631, 48559, 90181, 284417, 528203, 631267, 1990919, 3697421, 25881947]

約数ペア:

[(1, 25881947), (7, 3697421), (13, 1990919), (41, 631267), (49, 528203), (91, 284417), (287, 90181), (533, 48559), (637, 40631), (991, 26117), (2009, 12883), (3731, 6937)]