20340520

素因数分解:

$2^3\times 5^1\times {\mathrm{508513}}^1$

素因数の和:508524

約数の個数: 16

約数和(自身を含む): 45766260

約数和(自身を除く): 25425740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508513, 1017026, 2034052, 2542565, 4068104, 5085130, 10170260, 20340520]

約数ペア:

[(1, 20340520), (2, 10170260), (4, 5085130), (5, 4068104), (8, 2542565), (10, 2034052), (20, 1017026), (40, 508513)]