643770112

素因数分解:

$2^8\times {\mathrm{127}}^1\times {\mathrm{19801}}^1$

素因数の和:19944

約数の個数: 36

約数和(自身を含む): 1295209216

約数和(自身を除く): 651439104

約数列:

[1, 2, 4, 8, 16, 32, 64, 127, 128, 254, 256, 508, 1016, 2032, 4064, 8128, 16256, 19801, 32512, 39602, 79204, 158408, 316816, 633632, 1267264, 2514727, 2534528, 5029454, 5069056, 10058908, 20117816, 40235632, 80471264, 160942528, 321885056, 643770112]

約数ペア:

[(1, 643770112), (2, 321885056), (4, 160942528), (8, 80471264), (16, 40235632), (32, 20117816), (64, 10058908), (127, 5069056), (128, 5029454), (254, 2534528), (256, 2514727), (508, 1267264), (1016, 633632), (2032, 316816), (4064, 158408), (8128, 79204), (16256, 39602), (19801, 32512)]