100648400

素因数分解:

$2^4\times 5^2\times {\mathrm{251621}}^1$

素因数の和:251639

約数の個数: 30

約数和(自身を含む): 241808742

約数和(自身を除く): 141160342

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 251621, 503242, 1006484, 1258105, 2012968, 2516210, 4025936, 5032420, 6290525, 10064840, 12581050, 20129680, 25162100, 50324200, 100648400]

約数ペア:

[(1, 100648400), (2, 50324200), (4, 25162100), (5, 20129680), (8, 12581050), (10, 10064840), (16, 6290525), (20, 5032420), (25, 4025936), (40, 2516210), (50, 2012968), (80, 1258105), (100, 1006484), (200, 503242), (400, 251621)]