21053253

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{3623}}^1$

素因数の和:3788

約数の個数: 16

約数和(自身を含む): 30441600

約数和(自身を除く): 9388347

約数列:

[1, 3, 13, 39, 149, 447, 1937, 3623, 5811, 10869, 47099, 141297, 539827, 1619481, 7017751, 21053253]

約数ペア:

[(1, 21053253), (3, 7017751), (13, 1619481), (39, 539827), (149, 141297), (447, 47099), (1937, 10869), (3623, 5811)]