18700268517

素因数分解:

$3^2\times 7^2\times {\mathrm{2731}}^1\times {\mathrm{15527}}^1$

素因数の和:18278

約数の個数: 36

約数和(自身を含む): 31435069536

約数和(自身を除く): 12734801019

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 2731, 8193, 15527, 19117, 24579, 46581, 57351, 108689, 133819, 139743, 172053, 326067, 401457, 760823, 978201, 1204371, 2282469, 6847407, 42404237, 127212711, 296829659, 381638133, 890488977, 2077807613, 2671466931, 6233422839, 18700268517]

約数ペア:

[(1, 18700268517), (3, 6233422839), (7, 2671466931), (9, 2077807613), (21, 890488977), (49, 381638133), (63, 296829659), (147, 127212711), (441, 42404237), (2731, 6847407), (8193, 2282469), (15527, 1204371), (19117, 978201), (24579, 760823), (46581, 401457), (57351, 326067), (108689, 172053), (133819, 139743)]