19900486

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:724

約数の個数: 24

約数和(自身を含む): 32287464

約数和(自身を除く): 12386978

約数列:

[1, 2, 19, 38, 43, 86, 361, 641, 722, 817, 1282, 1634, 12179, 15523, 24358, 27563, 31046, 55126, 231401, 462802, 523697, 1047394, 9950243, 19900486]

約数ペア:

[(1, 19900486), (2, 9950243), (19, 1047394), (38, 523697), (43, 462802), (86, 231401), (361, 55126), (641, 31046), (722, 27563), (817, 24358), (1282, 15523), (1634, 12179)]