15961980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15649}}^1$

素因数の和:15678

約数の個数: 48

約数和(自身を含む): 47325600

約数和(自身を除く): 31363620

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, 15649, 31298, 46947, 62596, 78245, 93894, 156490, 187788, 234735, 266033, 312980, 469470, 532066, 798099, 938940, 1064132, 1330165, 1596198, 2660330, 3192396, 3990495, 5320660, 7980990, 15961980]

約数ペア:

[(1, 15961980), (2, 7980990), (3, 5320660), (4, 3990495), (5, 3192396), (6, 2660330), (10, 1596198), (12, 1330165), (15, 1064132), (17, 938940), (20, 798099), (30, 532066), (34, 469470), (51, 312980), (60, 266033), (68, 234735), (85, 187788), (102, 156490), (170, 93894), (204, 78245), (255, 62596), (340, 46947), (510, 31298), (1020, 15649)]