71820520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43793}}^1$

素因数の和:43845

約数の個数: 32

約数和(自身を含む): 165541320

約数和(自身を除く): 93720800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 43793, 87586, 175172, 218965, 350344, 437930, 875860, 1751720, 1795513, 3591026, 7182052, 8977565, 14364104, 17955130, 35910260, 71820520]

約数ペア:

[(1, 71820520), (2, 35910260), (4, 17955130), (5, 14364104), (8, 8977565), (10, 7182052), (20, 3591026), (40, 1795513), (41, 1751720), (82, 875860), (164, 437930), (205, 350344), (328, 218965), (410, 175172), (820, 87586), (1640, 43793)]