20279493

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:298

約数の個数: 36

約数和(自身を含む): 32354400

約数和(自身を除く): 12074907

約数列:

[1, 3, 9, 13, 39, 67, 117, 169, 199, 201, 507, 597, 603, 871, 1521, 1791, 2587, 2613, 7761, 7839, 11323, 13333, 23283, 33631, 33969, 39999, 100893, 101907, 119997, 173329, 302679, 519987, 1559961, 2253277, 6759831, 20279493]

約数ペア:

[(1, 20279493), (3, 6759831), (9, 2253277), (13, 1559961), (39, 519987), (67, 302679), (117, 173329), (169, 119997), (199, 101907), (201, 100893), (507, 39999), (597, 33969), (603, 33631), (871, 23283), (1521, 13333), (1791, 11323), (2587, 7839), (2613, 7761)]