640620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{3559}}^1$

素因数の和:3574

約数の個数: 36

約数和(自身を含む): 1943760

約数和(自身を除く): 1303140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 3559, 7118, 10677, 14236, 17795, 21354, 32031, 35590, 42708, 53385, 64062, 71180, 106770, 128124, 160155, 213540, 320310, 640620]

約数ペア:

[(1, 640620), (2, 320310), (3, 213540), (4, 160155), (5, 128124), (6, 106770), (9, 71180), (10, 64062), (12, 53385), (15, 42708), (18, 35590), (20, 32031), (30, 21354), (36, 17795), (45, 14236), (60, 10677), (90, 7118), (180, 3559)]