1604000

素因数分解:

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

素因数の和:426

約数の個数: 48

約数和(自身を含む): 3950856

約数和(自身を除く): 2346856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 401, 500, 800, 802, 1000, 1604, 2000, 2005, 3208, 4000, 4010, 6416, 8020, 10025, 12832, 16040, 20050, 32080, 40100, 50125, 64160, 80200, 100250, 160400, 200500, 320800, 401000, 802000, 1604000]

約数ペア:

[(1, 1604000), (2, 802000), (4, 401000), (5, 320800), (8, 200500), (10, 160400), (16, 100250), (20, 80200), (25, 64160), (32, 50125), (40, 40100), (50, 32080), (80, 20050), (100, 16040), (125, 12832), (160, 10025), (200, 8020), (250, 6416), (400, 4010), (401, 4000), (500, 3208), (800, 2005), (802, 2000), (1000, 1604)]