1987980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1949}}^1$

素因数の和:1978

約数の個数: 48

約数和(自身を含む): 5896800

約数和(自身を除く): 3908820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 1949, 3898, 5847, 7796, 9745, 11694, 19490, 23388, 29235, 33133, 38980, 58470, 66266, 99399, 116940, 132532, 165665, 198798, 331330, 397596, 496995, 662660, 993990, 1987980]

約数ペア:

[(1, 1987980), (2, 993990), (3, 662660), (4, 496995), (5, 397596), (6, 331330), (10, 198798), (12, 165665), (15, 132532), (17, 116940), (20, 99399), (30, 66266), (34, 58470), (51, 38980), (60, 33133), (68, 29235), (85, 23388), (102, 19490), (170, 11694), (204, 9745), (255, 7796), (340, 5847), (510, 3898), (1020, 1949)]