819090400

素因数分解:

$2^5\times 5^2\times {\mathrm{397}}^1\times {\mathrm{2579}}^1$

素因数の和:2996

約数の個数: 72

約数和(自身を含む): 2005418520

約数和(自身を除く): 1186328120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 397, 400, 794, 800, 1588, 1985, 2579, 3176, 3970, 5158, 6352, 7940, 9925, 10316, 12704, 12895, 15880, 19850, 20632, 25790, 31760, 39700, 41264, 51580, 63520, 64475, 79400, 82528, 103160, 128950, 158800, 206320, 257900, 317600, 412640, 515800, 1023863, 1031600, 2047726, 2063200, 4095452, 5119315, 8190904, 10238630, 16381808, 20477260, 25596575, 32763616, 40954520, 51193150, 81909040, 102386300, 163818080, 204772600, 409545200, 819090400]

約数ペア:

[(1, 819090400), (2, 409545200), (4, 204772600), (5, 163818080), (8, 102386300), (10, 81909040), (16, 51193150), (20, 40954520), (25, 32763616), (32, 25596575), (40, 20477260), (50, 16381808), (80, 10238630), (100, 8190904), (160, 5119315), (200, 4095452), (397, 2063200), (400, 2047726), (794, 1031600), (800, 1023863), (1588, 515800), (1985, 412640), (2579, 317600), (3176, 257900), (3970, 206320), (5158, 158800), (6352, 128950), (7940, 103160), (9925, 82528), (10316, 79400), (12704, 64475), (12895, 63520), (15880, 51580), (19850, 41264), (20632, 39700), (25790, 31760)]