21408189

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{5741}}^1$

素因数の和:5868

約数の個数: 16

約数和(自身を含む): 31420224

約数和(自身を除く): 10012035

約数列:

[1, 3, 11, 33, 113, 339, 1243, 3729, 5741, 17223, 63151, 189453, 648733, 1946199, 7136063, 21408189]

約数ペア:

[(1, 21408189), (3, 7136063), (11, 1946199), (33, 648733), (113, 189453), (339, 63151), (1243, 17223), (3729, 5741)]