20280056979

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3221}}^1\times {\mathrm{23063}}^1$

素因数の和:26307

約数の個数: 32

約数和(自身を含む): 33291869184

約数和(自身を除く): 13011812205

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 3221, 9663, 22547, 23063, 41873, 67641, 69189, 125619, 161441, 293111, 299819, 484323, 879333, 899457, 2098733, 6296199, 74285923, 222857769, 520001461, 965716999, 1560004383, 2897150997, 6760018993, 20280056979]

約数ペア:

[(1, 20280056979), (3, 6760018993), (7, 2897150997), (13, 1560004383), (21, 965716999), (39, 520001461), (91, 222857769), (273, 74285923), (3221, 6296199), (9663, 2098733), (22547, 899457), (23063, 879333), (41873, 484323), (67641, 299819), (69189, 293111), (125619, 161441)]