51311980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 110680416

約数和(自身を除く): 59368436

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 137, 244, 274, 305, 307, 548, 610, 614, 685, 1220, 1228, 1370, 1535, 2740, 3070, 6140, 8357, 16714, 18727, 33428, 37454, 41785, 42059, 74908, 83570, 84118, 93635, 167140, 168236, 187270, 210295, 374540, 420590, 841180, 2565599, 5131198, 10262396, 12827995, 25655990, 51311980]

約数ペア:

[(1, 51311980), (2, 25655990), (4, 12827995), (5, 10262396), (10, 5131198), (20, 2565599), (61, 841180), (122, 420590), (137, 374540), (244, 210295), (274, 187270), (305, 168236), (307, 167140), (548, 93635), (610, 84118), (614, 83570), (685, 74908), (1220, 42059), (1228, 41785), (1370, 37454), (1535, 33428), (2740, 18727), (3070, 16714), (6140, 8357)]