802000

素因数分解:

$2^4\times 5^3\times {\mathrm{401}}^1$

素因数の和:424

約数の個数: 40

約数和(自身を含む): 1944072

約数和(自身を除く): 1142072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 401, 500, 802, 1000, 1604, 2000, 2005, 3208, 4010, 6416, 8020, 10025, 16040, 20050, 32080, 40100, 50125, 80200, 100250, 160400, 200500, 401000, 802000]

約数ペア:

[(1, 802000), (2, 401000), (4, 200500), (5, 160400), (8, 100250), (10, 80200), (16, 50125), (20, 40100), (25, 32080), (40, 20050), (50, 16040), (80, 10025), (100, 8020), (125, 6416), (200, 4010), (250, 3208), (400, 2005), (401, 2000), (500, 1604), (802, 1000)]