19781229

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 29635200

約数和(自身を除く): 9853971

約数列:

[1, 3, 13, 39, 41, 89, 123, 139, 267, 417, 533, 1157, 1599, 1807, 3471, 3649, 5421, 5699, 10947, 12371, 17097, 37113, 47437, 74087, 142311, 160823, 222261, 482469, 507211, 1521633, 6593743, 19781229]

約数ペア:

[(1, 19781229), (3, 6593743), (13, 1521633), (39, 507211), (41, 482469), (89, 222261), (123, 160823), (139, 142311), (267, 74087), (417, 47437), (533, 37113), (1157, 17097), (1599, 12371), (1807, 10947), (3471, 5699), (3649, 5421)]