28721329

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{547}}^1\times {\mathrm{577}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 35475328

約数和(自身を除く): 6753999

約数列:

[1, 7, 13, 91, 547, 577, 3829, 4039, 7111, 7501, 49777, 52507, 315619, 2209333, 4103047, 28721329]

約数ペア:

[(1, 28721329), (7, 4103047), (13, 2209333), (91, 315619), (547, 52507), (577, 49777), (3829, 7501), (4039, 7111)]