640490758

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1\times {\mathrm{241}}^1$

素因数の和:592

約数の個数: 32

約数和(自身を含む): 992819520

約数和(自身を除く): 352328762

約数列:

[1, 2, 73, 109, 146, 167, 218, 241, 334, 482, 7957, 12191, 15914, 17593, 18203, 24382, 26269, 35186, 36406, 40247, 52538, 80494, 1328819, 1917637, 2657638, 2938031, 3835274, 4386923, 5876062, 8773846, 320245379, 640490758]

約数ペア:

[(1, 640490758), (2, 320245379), (73, 8773846), (109, 5876062), (146, 4386923), (167, 3835274), (218, 2938031), (241, 2657638), (334, 1917637), (482, 1328819), (7957, 80494), (12191, 52538), (15914, 40247), (17593, 36406), (18203, 35186), (24382, 26269)]