161721295

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1\times {\mathrm{1021}}^1$

素因数の和:1506

約数の個数: 16

約数和(自身を含む): 197205120

約数和(自身を除く): 35483825

約数列:

[1, 5, 79, 395, 401, 1021, 2005, 5105, 31679, 80659, 158395, 403295, 409421, 2047105, 32344259, 161721295]

約数ペア:

[(1, 161721295), (5, 32344259), (79, 2047105), (395, 409421), (401, 403295), (1021, 158395), (2005, 80659), (5105, 31679)]