28840720

素因数分解:

$2^4\times 5^1\times {\mathrm{360509}}^1$

素因数の和:360522

約数の個数: 20

約数和(自身を含む): 67054860

約数和(自身を除く): 38214140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 360509, 721018, 1442036, 1802545, 2884072, 3605090, 5768144, 7210180, 14420360, 28840720]

約数ペア:

[(1, 28840720), (2, 14420360), (4, 7210180), (5, 5768144), (8, 3605090), (10, 2884072), (16, 1802545), (20, 1442036), (40, 721018), (80, 360509)]