1681000

素因数分解:

$2^3\times 5^3\times {\mathrm{41}}^2$

素因数の和:103

約数の個数: 48

約数和(自身を含む): 4031820

約数和(自身を除く): 2350820

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 500, 820, 1000, 1025, 1640, 1681, 2050, 3362, 4100, 5125, 6724, 8200, 8405, 10250, 13448, 16810, 20500, 33620, 41000, 42025, 67240, 84050, 168100, 210125, 336200, 420250, 840500, 1681000]

約数ペア:

[(1, 1681000), (2, 840500), (4, 420250), (5, 336200), (8, 210125), (10, 168100), (20, 84050), (25, 67240), (40, 42025), (41, 41000), (50, 33620), (82, 20500), (100, 16810), (125, 13448), (164, 10250), (200, 8405), (205, 8200), (250, 6724), (328, 5125), (410, 4100), (500, 3362), (820, 2050), (1000, 1681), (1025, 1640)]