16981980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{16649}}^1$

素因数の和:16678

約数の個数: 48

約数和(自身を含む): 50349600

約数和(自身を除く): 33367620

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, 16649, 33298, 49947, 66596, 83245, 99894, 166490, 199788, 249735, 283033, 332980, 499470, 566066, 849099, 998940, 1132132, 1415165, 1698198, 2830330, 3396396, 4245495, 5660660, 8490990, 16981980]

約数ペア:

[(1, 16981980), (2, 8490990), (3, 5660660), (4, 4245495), (5, 3396396), (6, 2830330), (10, 1698198), (12, 1415165), (15, 1132132), (17, 998940), (20, 849099), (30, 566066), (34, 499470), (51, 332980), (60, 283033), (68, 249735), (85, 199788), (102, 166490), (170, 99894), (204, 83245), (255, 66596), (340, 49947), (510, 33298), (1020, 16649)]