200500

素因数分解:

$2^2\times 5^3\times {\mathrm{401}}^1$

素因数の和:420

約数の個数: 24

約数和(自身を含む): 438984

約数和(自身を除く): 238484

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 401, 500, 802, 1604, 2005, 4010, 8020, 10025, 20050, 40100, 50125, 100250, 200500]

約数ペア:

[(1, 200500), (2, 100250), (4, 50125), (5, 40100), (10, 20050), (20, 10025), (25, 8020), (50, 4010), (100, 2005), (125, 1604), (250, 802), (401, 500)]