278375859

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{653}}^1$

素因数の和:961

約数の個数: 40

約数和(自身を含む): 439985040

約数和(自身を除く): 161609181

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 277, 513, 653, 831, 1539, 1959, 2493, 5263, 5877, 7479, 12407, 15789, 17631, 22437, 37221, 47367, 52893, 111663, 142101, 180881, 334989, 426303, 542643, 1004967, 1627929, 3436739, 4883787, 10310217, 14651361, 30930651, 92791953, 278375859]

約数ペア:

[(1, 278375859), (3, 92791953), (9, 30930651), (19, 14651361), (27, 10310217), (57, 4883787), (81, 3436739), (171, 1627929), (277, 1004967), (513, 542643), (653, 426303), (831, 334989), (1539, 180881), (1959, 142101), (2493, 111663), (5263, 52893), (5877, 47367), (7479, 37221), (12407, 22437), (15789, 17631)]