630400

素因数分解:

$2^7\times 5^2\times {\mathrm{197}}^1$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 1565190

約数和(自身を除く): 934790

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 197, 200, 320, 394, 400, 640, 788, 800, 985, 1576, 1600, 1970, 3152, 3200, 3940, 4925, 6304, 7880, 9850, 12608, 15760, 19700, 25216, 31520, 39400, 63040, 78800, 126080, 157600, 315200, 630400]

約数ペア:

[(1, 630400), (2, 315200), (4, 157600), (5, 126080), (8, 78800), (10, 63040), (16, 39400), (20, 31520), (25, 25216), (32, 19700), (40, 15760), (50, 12608), (64, 9850), (80, 7880), (100, 6304), (128, 4925), (160, 3940), (197, 3200), (200, 3152), (320, 1970), (394, 1600), (400, 1576), (640, 985), (788, 800)]