19518993

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:386

約数の個数: 36

約数和(自身を含む): 31374252

約数和(自身を除く): 11855259

約数列:

[1, 3, 9, 13, 39, 41, 117, 123, 169, 313, 369, 507, 533, 939, 1521, 1599, 2817, 4069, 4797, 6929, 12207, 12833, 20787, 36621, 38499, 52897, 62361, 115497, 158691, 166829, 476073, 500487, 1501461, 2168777, 6506331, 19518993]

約数ペア:

[(1, 19518993), (3, 6506331), (9, 2168777), (13, 1501461), (39, 500487), (41, 476073), (117, 166829), (123, 158691), (169, 115497), (313, 62361), (369, 52897), (507, 38499), (533, 36621), (939, 20787), (1521, 12833), (1599, 12207), (2817, 6929), (4069, 4797)]