19906280

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4651}}^1$

素因数の和:4769

約数の個数: 32

約数和(自身を含む): 45217440

約数和(自身を除く): 25311160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4651, 9302, 18604, 23255, 37208, 46510, 93020, 186040, 497657, 995314, 1990628, 2488285, 3981256, 4976570, 9953140, 19906280]

約数ペア:

[(1, 19906280), (2, 9953140), (4, 4976570), (5, 3981256), (8, 2488285), (10, 1990628), (20, 995314), (40, 497657), (107, 186040), (214, 93020), (428, 46510), (535, 37208), (856, 23255), (1070, 18604), (2140, 9302), (4280, 4651)]