128200

素因数分解:

$2^3\times 5^2\times {\mathrm{641}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 298530

約数和(自身を除く): 170330

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 641, 1282, 2564, 3205, 5128, 6410, 12820, 16025, 25640, 32050, 64100, 128200]

約数ペア:

[(1, 128200), (2, 64100), (4, 32050), (5, 25640), (8, 16025), (10, 12820), (20, 6410), (25, 5128), (40, 3205), (50, 2564), (100, 1282), (200, 641)]