78840645

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1399}}^1$

素因数の和:1454

約数の個数: 48

約数和(自身を含む): 144412800

約数和(自身を除く): 65572155

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 289, 663, 867, 1105, 1399, 1445, 3315, 3757, 4197, 4335, 6995, 11271, 18187, 18785, 20985, 23783, 54561, 56355, 71349, 90935, 118915, 272805, 309179, 356745, 404311, 927537, 1212933, 1545895, 2021555, 4637685, 5256043, 6064665, 15768129, 26280215, 78840645]

約数ペア:

[(1, 78840645), (3, 26280215), (5, 15768129), (13, 6064665), (15, 5256043), (17, 4637685), (39, 2021555), (51, 1545895), (65, 1212933), (85, 927537), (195, 404311), (221, 356745), (255, 309179), (289, 272805), (663, 118915), (867, 90935), (1105, 71349), (1399, 56355), (1445, 54561), (3315, 23783), (3757, 20985), (4197, 18785), (4335, 18187), (6995, 11271)]