81438903

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{7649}}^1$

素因数の和:7688

約数の個数: 36

約数和(自身を含む): 145594800

約数和(自身を除く): 64155897

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 169, 273, 507, 819, 1183, 1521, 3549, 7649, 10647, 22947, 53543, 68841, 99437, 160629, 298311, 481887, 696059, 894933, 1292681, 2088177, 3878043, 6264531, 9048767, 11634129, 27146301, 81438903]

約数ペア:

[(1, 81438903), (3, 27146301), (7, 11634129), (9, 9048767), (13, 6264531), (21, 3878043), (39, 2088177), (63, 1292681), (91, 894933), (117, 696059), (169, 481887), (273, 298311), (507, 160629), (819, 99437), (1183, 68841), (1521, 53543), (3549, 22947), (7649, 10647)]