20639200

素因数分解:

$2^5\times 5^2\times {\mathrm{25799}}^1$

素因数の和:25819

約数の個数: 36

約数和(自身を含む): 50387400

約数和(自身を除く): 29748200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25799, 51598, 103196, 128995, 206392, 257990, 412784, 515980, 644975, 825568, 1031960, 1289950, 2063920, 2579900, 4127840, 5159800, 10319600, 20639200]

約数ペア:

[(1, 20639200), (2, 10319600), (4, 5159800), (5, 4127840), (8, 2579900), (10, 2063920), (16, 1289950), (20, 1031960), (25, 825568), (32, 644975), (40, 515980), (50, 412784), (80, 257990), (100, 206392), (160, 128995), (200, 103196), (400, 51598), (800, 25799)]