32400400

素因数分解:

$2^4\times 5^2\times {\mathrm{81001}}^1$

素因数の和:81019

約数の個数: 30

約数和(自身を含む): 77842922

約数和(自身を除く): 45442522

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 81001, 162002, 324004, 405005, 648008, 810010, 1296016, 1620020, 2025025, 3240040, 4050050, 6480080, 8100100, 16200200, 32400400]

約数ペア:

[(1, 32400400), (2, 16200200), (4, 8100100), (5, 6480080), (8, 4050050), (10, 3240040), (16, 2025025), (20, 1620020), (25, 1296016), (40, 810010), (50, 648008), (80, 405005), (100, 324004), (200, 162002), (400, 81001)]