520066640

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{20903}}^1$

素因数の和:21227

約数の個数: 40

約数和(自身を含む): 1213100928

約数和(自身を除く): 693034288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 1244, 1555, 2488, 3110, 4976, 6220, 12440, 20903, 24880, 41806, 83612, 104515, 167224, 209030, 334448, 418060, 836120, 1672240, 6500833, 13001666, 26003332, 32504165, 52006664, 65008330, 104013328, 130016660, 260033320, 520066640]

約数ペア:

[(1, 520066640), (2, 260033320), (4, 130016660), (5, 104013328), (8, 65008330), (10, 52006664), (16, 32504165), (20, 26003332), (40, 13001666), (80, 6500833), (311, 1672240), (622, 836120), (1244, 418060), (1555, 334448), (2488, 209030), (3110, 167224), (4976, 104515), (6220, 83612), (12440, 41806), (20903, 24880)]