280050040

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{189223}}^1$

素因数の和:189271

約数の個数: 32

約数和(自身を含む): 647146080

約数和(自身を除く): 367096040

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 189223, 378446, 756892, 946115, 1513784, 1892230, 3784460, 7001251, 7568920, 14002502, 28005004, 35006255, 56010008, 70012510, 140025020, 280050040]

約数ペア:

[(1, 280050040), (2, 140025020), (4, 70012510), (5, 56010008), (8, 35006255), (10, 28005004), (20, 14002502), (37, 7568920), (40, 7001251), (74, 3784460), (148, 1892230), (185, 1513784), (296, 946115), (370, 756892), (740, 378446), (1480, 189223)]