208789917

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{12763}}^1$

素因数の和:12833

約数の個数: 32

約数和(自身を含む): 343096320

約数和(自身を除く): 134306403

約数列:

[1, 3, 7, 19, 21, 41, 57, 123, 133, 287, 399, 779, 861, 2337, 5453, 12763, 16359, 38289, 89341, 242497, 268023, 523283, 727491, 1569849, 1697479, 3662981, 5092437, 9942377, 10988943, 29827131, 69596639, 208789917]

約数ペア:

[(1, 208789917), (3, 69596639), (7, 29827131), (19, 10988943), (21, 9942377), (41, 5092437), (57, 3662981), (123, 1697479), (133, 1569849), (287, 727491), (399, 523283), (779, 268023), (861, 242497), (2337, 89341), (5453, 38289), (12763, 16359)]