21275307

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1499}}^1$

素因数の和:1607

約数の個数: 24

約数和(自身を含む): 32760000

約数和(自身を除く): 11484693

約数列:

[1, 3, 9, 19, 57, 83, 171, 249, 747, 1499, 1577, 4497, 4731, 13491, 14193, 28481, 85443, 124417, 256329, 373251, 1119753, 2363923, 7091769, 21275307]

約数ペア:

[(1, 21275307), (3, 7091769), (9, 2363923), (19, 1119753), (57, 373251), (83, 256329), (171, 124417), (249, 85443), (747, 28481), (1499, 14193), (1577, 13491), (4497, 4731)]