129358400

素因数分解:

$2^6\times 5^2\times {\mathrm{80849}}^1$

素因数の和:80871

約数の個数: 42

約数和(自身を含む): 318306450

約数和(自身を除く): 188948050

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 80849, 161698, 323396, 404245, 646792, 808490, 1293584, 1616980, 2021225, 2587168, 3233960, 4042450, 5174336, 6467920, 8084900, 12935840, 16169800, 25871680, 32339600, 64679200, 129358400]

約数ペア:

[(1, 129358400), (2, 64679200), (4, 32339600), (5, 25871680), (8, 16169800), (10, 12935840), (16, 8084900), (20, 6467920), (25, 5174336), (32, 4042450), (40, 3233960), (50, 2587168), (64, 2021225), (80, 1616980), (100, 1293584), (160, 808490), (200, 646792), (320, 404245), (400, 323396), (800, 161698), (1600, 80849)]