21276437

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 26966016

約数和(自身を除く): 5689579

約数列:

[1, 7, 13, 49, 91, 127, 263, 637, 889, 1651, 1841, 3419, 6223, 11557, 12887, 23933, 33401, 80899, 167531, 233807, 434213, 1636649, 3039491, 21276437]

約数ペア:

[(1, 21276437), (7, 3039491), (13, 1636649), (49, 434213), (91, 233807), (127, 167531), (263, 80899), (637, 33401), (889, 23933), (1651, 12887), (1841, 11557), (3419, 6223)]