18740241

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{37}}^2$

素因数の和:112

約数の個数: 45

約数和(自身を含む): 31155201

約数和(自身を除く): 12414960

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 169, 333, 351, 481, 507, 999, 1053, 1369, 1443, 1521, 2997, 4107, 4329, 4563, 6253, 12321, 12987, 13689, 17797, 18759, 36963, 38961, 53391, 56277, 110889, 160173, 168831, 231361, 480519, 506493, 694083, 1441557, 2082249, 6246747, 18740241]

約数ペア:

[(1, 18740241), (3, 6246747), (9, 2082249), (13, 1441557), (27, 694083), (37, 506493), (39, 480519), (81, 231361), (111, 168831), (117, 160173), (169, 110889), (333, 56277), (351, 53391), (481, 38961), (507, 36963), (999, 18759), (1053, 17797), (1369, 13689), (1443, 12987), (1521, 12321), (2997, 6253), (4107, 4563)]