205628840

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{12569}}^1$

素因数の和:12989

約数の個数: 32

約数和(自身を含む): 463833000

約数和(自身を除く): 258204160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 12569, 16360, 25138, 50276, 62845, 100552, 125690, 251380, 502760, 5140721, 10281442, 20562884, 25703605, 41125768, 51407210, 102814420, 205628840]

約数ペア:

[(1, 205628840), (2, 102814420), (4, 51407210), (5, 41125768), (8, 25703605), (10, 20562884), (20, 10281442), (40, 5140721), (409, 502760), (818, 251380), (1636, 125690), (2045, 100552), (3272, 62845), (4090, 50276), (8180, 25138), (12569, 16360)]