2640520

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{263}}^1$

素因数の和:525

約数の個数: 32

約数和(自身を含む): 5987520

約数和(自身を除く): 3347000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 263, 502, 526, 1004, 1052, 1255, 1315, 2008, 2104, 2510, 2630, 5020, 5260, 10040, 10520, 66013, 132026, 264052, 330065, 528104, 660130, 1320260, 2640520]

約数ペア:

[(1, 2640520), (2, 1320260), (4, 660130), (5, 528104), (8, 330065), (10, 264052), (20, 132026), (40, 66013), (251, 10520), (263, 10040), (502, 5260), (526, 5020), (1004, 2630), (1052, 2510), (1255, 2104), (1315, 2008)]