1620400

素因数分解:

$2^4\times 5^2\times {\mathrm{4051}}^1$

素因数の和:4069

約数の個数: 30

約数和(自身を含む): 3893972

約数和(自身を除く): 2273572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 4051, 8102, 16204, 20255, 32408, 40510, 64816, 81020, 101275, 162040, 202550, 324080, 405100, 810200, 1620400]

約数ペア:

[(1, 1620400), (2, 810200), (4, 405100), (5, 324080), (8, 202550), (10, 162040), (16, 101275), (20, 81020), (25, 64816), (40, 40510), (50, 32408), (80, 20255), (100, 16204), (200, 8102), (400, 4051)]