20519487

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:297

約数の個数: 40

約数和(自身を含む): 32912000

約数和(自身を除く): 12392513

約数列:

[1, 3, 9, 19, 27, 57, 67, 81, 171, 199, 201, 513, 597, 603, 1273, 1539, 1791, 1809, 3781, 3819, 5373, 5427, 11343, 11457, 13333, 16119, 34029, 34371, 39999, 102087, 103113, 119997, 253327, 306261, 359991, 759981, 1079973, 2279943, 6839829, 20519487]

約数ペア:

[(1, 20519487), (3, 6839829), (9, 2279943), (19, 1079973), (27, 759981), (57, 359991), (67, 306261), (81, 253327), (171, 119997), (199, 103113), (201, 102087), (513, 39999), (597, 34371), (603, 34029), (1273, 16119), (1539, 13333), (1791, 11457), (1809, 11343), (3781, 5427), (3819, 5373)]