991400

素因数分解:

$2^3\times 5^2\times {\mathrm{4957}}^1$

素因数の和:4973

約数の個数: 24

約数和(自身を含む): 2305470

約数和(自身を除く): 1314070

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 4957, 9914, 19828, 24785, 39656, 49570, 99140, 123925, 198280, 247850, 495700, 991400]

約数ペア:

[(1, 991400), (2, 495700), (4, 247850), (5, 198280), (8, 123925), (10, 99140), (20, 49570), (25, 39656), (40, 24785), (50, 19828), (100, 9914), (200, 4957)]