81840290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{167021}}^1$

素因数の和:167042

約数の個数: 24

約数和(自身を含む): 171364572

約数和(自身を除く): 89524282

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 167021, 334042, 835105, 1169147, 1670210, 2338294, 5845735, 8184029, 11691470, 16368058, 40920145, 81840290]

約数ペア:

[(1, 81840290), (2, 40920145), (5, 16368058), (7, 11691470), (10, 8184029), (14, 5845735), (35, 2338294), (49, 1670210), (70, 1169147), (98, 835105), (245, 334042), (490, 167021)]