19623280

素因数分解:

$2^4\times 5^1\times {\mathrm{245291}}^1$

素因数の和:245304

約数の個数: 20

約数和(自身を含む): 45624312

約数和(自身を除く): 26001032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245291, 490582, 981164, 1226455, 1962328, 2452910, 3924656, 4905820, 9811640, 19623280]

約数ペア:

[(1, 19623280), (2, 9811640), (4, 4905820), (5, 3924656), (8, 2452910), (10, 1962328), (16, 1226455), (20, 981164), (40, 490582), (80, 245291)]