129664240

素因数分解:

$2^4\times 5^1\times {\mathrm{1620803}}^1$

素因数の和:1620816

約数の個数: 20

約数和(自身を含む): 301469544

約数和(自身を除く): 171805304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1620803, 3241606, 6483212, 8104015, 12966424, 16208030, 25932848, 32416060, 64832120, 129664240]

約数ペア:

[(1, 129664240), (2, 64832120), (4, 32416060), (5, 25932848), (8, 16208030), (10, 12966424), (16, 8104015), (20, 6483212), (40, 3241606), (80, 1620803)]