2621780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 6416256

約数和(自身を除く): 3794476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 307, 427, 610, 614, 854, 1220, 1228, 1535, 1708, 2135, 2149, 3070, 4270, 4298, 6140, 8540, 8596, 10745, 18727, 21490, 37454, 42980, 74908, 93635, 131089, 187270, 262178, 374540, 524356, 655445, 1310890, 2621780]

約数ペア:

[(1, 2621780), (2, 1310890), (4, 655445), (5, 524356), (7, 374540), (10, 262178), (14, 187270), (20, 131089), (28, 93635), (35, 74908), (61, 42980), (70, 37454), (122, 21490), (140, 18727), (244, 10745), (305, 8596), (307, 8540), (427, 6140), (610, 4298), (614, 4270), (854, 3070), (1220, 2149), (1228, 2135), (1535, 1708)]