20301440

素因数分解:

$2^7\times 5^1\times {\mathrm{31721}}^1$

素因数の和:31740

約数の個数: 32

約数和(自身を含む): 48534660

約数和(自身を除く): 28233220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31721, 63442, 126884, 158605, 253768, 317210, 507536, 634420, 1015072, 1268840, 2030144, 2537680, 4060288, 5075360, 10150720, 20301440]

約数ペア:

[(1, 20301440), (2, 10150720), (4, 5075360), (5, 4060288), (8, 2537680), (10, 2030144), (16, 1268840), (20, 1015072), (32, 634420), (40, 507536), (64, 317210), (80, 253768), (128, 158605), (160, 126884), (320, 63442), (640, 31721)]