215386353

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{643}}^1$

素因数の和:1078

約数の個数: 48

約数和(自身を含む): 384442240

約数和(自身を除く): 169055887

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 409, 643, 819, 1227, 1929, 2863, 3681, 4501, 5317, 5787, 8359, 8589, 13503, 15951, 25077, 25767, 37219, 40509, 47853, 58513, 75231, 111657, 175539, 262987, 334971, 526617, 788961, 1840909, 2366883, 3418831, 5522727, 10256493, 16568181, 23931817, 30769479, 71795451, 215386353]

約数ペア:

[(1, 215386353), (3, 71795451), (7, 30769479), (9, 23931817), (13, 16568181), (21, 10256493), (39, 5522727), (63, 3418831), (91, 2366883), (117, 1840909), (273, 788961), (409, 526617), (643, 334971), (819, 262987), (1227, 175539), (1929, 111657), (2863, 75231), (3681, 58513), (4501, 47853), (5317, 40509), (5787, 37219), (8359, 25767), (8589, 25077), (13503, 15951)]