1998780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{4759}}^1$

素因数の和:4778

約数の個数: 48

約数和(自身を含む): 6397440

約数和(自身を除く): 4398660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 4759, 9518, 14277, 19036, 23795, 28554, 33313, 47590, 57108, 66626, 71385, 95180, 99939, 133252, 142770, 166565, 199878, 285540, 333130, 399756, 499695, 666260, 999390, 1998780]

約数ペア:

[(1, 1998780), (2, 999390), (3, 666260), (4, 499695), (5, 399756), (6, 333130), (7, 285540), (10, 199878), (12, 166565), (14, 142770), (15, 133252), (20, 99939), (21, 95180), (28, 71385), (30, 66626), (35, 57108), (42, 47590), (60, 33313), (70, 28554), (84, 23795), (105, 19036), (140, 14277), (210, 9518), (420, 4759)]