128336840

素因数分解:

$2^3\times 5^1\times {\mathrm{3208421}}^1$

素因数の和:3208432

約数の個数: 16

約数和(自身を含む): 288757980

約数和(自身を除く): 160421140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3208421, 6416842, 12833684, 16042105, 25667368, 32084210, 64168420, 128336840]

約数ペア:

[(1, 128336840), (2, 64168420), (4, 32084210), (5, 25667368), (8, 16042105), (10, 12833684), (20, 6416842), (40, 3208421)]