1258384000

素因数分解:

$2^7\times 5^3\times {\mathrm{78649}}^1$

素因数の和:78678

約数の個数: 64

約数和(自身を含む): 3128697000

約数和(自身を除く): 1870313000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1600, 2000, 3200, 4000, 8000, 16000, 78649, 157298, 314596, 393245, 629192, 786490, 1258384, 1572980, 1966225, 2516768, 3145960, 3932450, 5033536, 6291920, 7864900, 9831125, 10067072, 12583840, 15729800, 19662250, 25167680, 31459600, 39324500, 50335360, 62919200, 78649000, 125838400, 157298000, 251676800, 314596000, 629192000, 1258384000]

約数ペア:

[(1, 1258384000), (2, 629192000), (4, 314596000), (5, 251676800), (8, 157298000), (10, 125838400), (16, 78649000), (20, 62919200), (25, 50335360), (32, 39324500), (40, 31459600), (50, 25167680), (64, 19662250), (80, 15729800), (100, 12583840), (125, 10067072), (128, 9831125), (160, 7864900), (200, 6291920), (250, 5033536), (320, 3932450), (400, 3145960), (500, 2516768), (640, 1966225), (800, 1572980), (1000, 1258384), (1600, 786490), (2000, 629192), (3200, 393245), (4000, 314596), (8000, 157298), (16000, 78649)]