163399160

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{6353}}^1$

素因数の和:7007

約数の個数: 32

約数和(自身を含む): 368277840

約数和(自身を除く): 204878680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6353, 6430, 12706, 12860, 25412, 25720, 31765, 50824, 63530, 127060, 254120, 4084979, 8169958, 16339916, 20424895, 32679832, 40849790, 81699580, 163399160]

約数ペア:

[(1, 163399160), (2, 81699580), (4, 40849790), (5, 32679832), (8, 20424895), (10, 16339916), (20, 8169958), (40, 4084979), (643, 254120), (1286, 127060), (2572, 63530), (3215, 50824), (5144, 31765), (6353, 25720), (6430, 25412), (12706, 12860)]