20163800

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2459}}^1$

素因数の和:2516

約数の個数: 48

約数和(自身を含む): 48043800

約数和(自身を除く): 27880000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1640, 2050, 2459, 4100, 4918, 8200, 9836, 12295, 19672, 24590, 49180, 61475, 98360, 100819, 122950, 201638, 245900, 403276, 491800, 504095, 806552, 1008190, 2016380, 2520475, 4032760, 5040950, 10081900, 20163800]

約数ペア:

[(1, 20163800), (2, 10081900), (4, 5040950), (5, 4032760), (8, 2520475), (10, 2016380), (20, 1008190), (25, 806552), (40, 504095), (41, 491800), (50, 403276), (82, 245900), (100, 201638), (164, 122950), (200, 100819), (205, 98360), (328, 61475), (410, 49180), (820, 24590), (1025, 19672), (1640, 12295), (2050, 9836), (2459, 8200), (4100, 4918)]