21131397959

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{5689}}^1\times {\mathrm{23071}}^1$

素因数の和:28790

約数の個数: 16

約数和(自身を含む): 25205698560

約数和(自身を除く): 4074300601

約数列:

[1, 7, 23, 161, 5689, 23071, 39823, 130847, 161497, 530633, 915929, 3714431, 131250919, 918756433, 3018771137, 21131397959]

約数ペア:

[(1, 21131397959), (7, 3018771137), (23, 918756433), (161, 131250919), (5689, 3714431), (23071, 915929), (39823, 530633), (130847, 161497)]