205121980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{5701}}^1$

素因数の和:5974

約数の個数: 48

約数和(自身を含む): 494294976

約数和(自身を除く): 289172996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 1028, 1285, 1799, 2570, 3598, 5140, 5701, 7196, 8995, 11402, 17990, 22804, 28505, 35980, 39907, 57010, 79814, 114020, 159628, 199535, 399070, 798140, 1465157, 2930314, 5860628, 7325785, 10256099, 14651570, 20512198, 29303140, 41024396, 51280495, 102560990, 205121980]

約数ペア:

[(1, 205121980), (2, 102560990), (4, 51280495), (5, 41024396), (7, 29303140), (10, 20512198), (14, 14651570), (20, 10256099), (28, 7325785), (35, 5860628), (70, 2930314), (140, 1465157), (257, 798140), (514, 399070), (1028, 199535), (1285, 159628), (1799, 114020), (2570, 79814), (3598, 57010), (5140, 39907), (5701, 35980), (7196, 28505), (8995, 22804), (11402, 17990)]