20397200

素因数分解:

$2^4\times 5^2\times {\mathrm{50993}}^1$

素因数の和:51011

約数の個数: 30

約数和(自身を含む): 49005234

約数和(自身を除く): 28608034

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 50993, 101986, 203972, 254965, 407944, 509930, 815888, 1019860, 1274825, 2039720, 2549650, 4079440, 5099300, 10198600, 20397200]

約数ペア:

[(1, 20397200), (2, 10198600), (4, 5099300), (5, 4079440), (8, 2549650), (10, 2039720), (16, 1274825), (20, 1019860), (25, 815888), (40, 509930), (50, 407944), (80, 254965), (100, 203972), (200, 101986), (400, 50993)]