20538063

素因数分解:

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

素因数の和:685

約数の個数: 48

約数和(自身を含む): 37712640

約数和(自身を除く): 17174577

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 169, 189, 273, 351, 507, 643, 819, 1183, 1521, 1929, 2457, 3549, 4501, 4563, 5787, 8359, 10647, 13503, 17361, 25077, 31941, 40509, 58513, 75231, 108667, 121527, 175539, 225693, 326001, 526617, 760669, 978003, 1579851, 2282007, 2934009, 6846021, 20538063]

約数ペア:

[(1, 20538063), (3, 6846021), (7, 2934009), (9, 2282007), (13, 1579851), (21, 978003), (27, 760669), (39, 526617), (63, 326001), (91, 225693), (117, 175539), (169, 121527), (189, 108667), (273, 75231), (351, 58513), (507, 40509), (643, 31941), (819, 25077), (1183, 17361), (1521, 13503), (1929, 10647), (2457, 8359), (3549, 5787), (4501, 4563)]