28481180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15649}}^1$

素因数の和:15678

約数の個数: 48

約数和(自身を含む): 73617600

約数和(自身を除く): 45136420

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15649, 31298, 62596, 78245, 109543, 156490, 203437, 219086, 312980, 406874, 438172, 547715, 813748, 1017185, 1095430, 1424059, 2034370, 2190860, 2848118, 4068740, 5696236, 7120295, 14240590, 28481180]

約数ペア:

[(1, 28481180), (2, 14240590), (4, 7120295), (5, 5696236), (7, 4068740), (10, 2848118), (13, 2190860), (14, 2034370), (20, 1424059), (26, 1095430), (28, 1017185), (35, 813748), (52, 547715), (65, 438172), (70, 406874), (91, 312980), (130, 219086), (140, 203437), (182, 156490), (260, 109543), (364, 78245), (455, 62596), (910, 31298), (1820, 15649)]