20705930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42257}}^1$

素因数の和:42278

約数の個数: 24

約数和(自身を含む): 43356708

約数和(自身を除く): 22650778

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42257, 84514, 211285, 295799, 422570, 591598, 1478995, 2070593, 2957990, 4141186, 10352965, 20705930]

約数ペア:

[(1, 20705930), (2, 10352965), (5, 4141186), (7, 2957990), (10, 2070593), (14, 1478995), (35, 591598), (49, 422570), (70, 295799), (98, 211285), (245, 84514), (490, 42257)]