19904967

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{17981}}^1$

素因数の和:18031

約数の個数: 16

約数和(自身を含む): 30209760

約数和(自身を除く): 10304793

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 17981, 53943, 161829, 485487, 737221, 2211663, 6634989, 19904967]

約数ペア:

[(1, 19904967), (3, 6634989), (9, 2211663), (27, 737221), (41, 485487), (123, 161829), (369, 53943), (1107, 17981)]