639262040

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1\times {\mathrm{1009}}^1$

素因数の和:1404

約数の個数: 64

約数和(自身を含む): 1474761600

約数和(自身を除く): 835499560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 337, 376, 470, 674, 940, 1009, 1348, 1685, 1880, 2018, 2696, 3370, 4036, 5045, 6740, 8072, 10090, 13480, 15839, 20180, 31678, 40360, 47423, 63356, 79195, 94846, 126712, 158390, 189692, 237115, 316780, 340033, 379384, 474230, 633560, 680066, 948460, 1360132, 1700165, 1896920, 2720264, 3400330, 6800660, 13601320, 15981551, 31963102, 63926204, 79907755, 127852408, 159815510, 319631020, 639262040]

約数ペア:

[(1, 639262040), (2, 319631020), (4, 159815510), (5, 127852408), (8, 79907755), (10, 63926204), (20, 31963102), (40, 15981551), (47, 13601320), (94, 6800660), (188, 3400330), (235, 2720264), (337, 1896920), (376, 1700165), (470, 1360132), (674, 948460), (940, 680066), (1009, 633560), (1348, 474230), (1685, 379384), (1880, 340033), (2018, 316780), (2696, 237115), (3370, 189692), (4036, 158390), (5045, 126712), (6740, 94846), (8072, 79195), (10090, 63356), (13480, 47423), (15839, 40360), (20180, 31678)]