280980388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 539090944

約数和(自身を除く): 258110556

約数列:

[1, 2, 4, 13, 26, 52, 127, 157, 254, 271, 314, 508, 542, 628, 1084, 1651, 2041, 3302, 3523, 4082, 6604, 7046, 8164, 14092, 19939, 34417, 39878, 42547, 68834, 79756, 85094, 137668, 170188, 259207, 447421, 518414, 553111, 894842, 1036828, 1106222, 1789684, 2212444, 5403469, 10806938, 21613876, 70245097, 140490194, 280980388]

約数ペア:

[(1, 280980388), (2, 140490194), (4, 70245097), (13, 21613876), (26, 10806938), (52, 5403469), (127, 2212444), (157, 1789684), (254, 1106222), (271, 1036828), (314, 894842), (508, 553111), (542, 518414), (628, 447421), (1084, 259207), (1651, 170188), (2041, 137668), (3302, 85094), (3523, 79756), (4082, 68834), (6604, 42547), (7046, 39878), (8164, 34417), (14092, 19939)]