19699821

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{257}}^1$

素因数の和:450

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 11507859

約数列:

[1, 3, 9, 17, 27, 51, 153, 167, 257, 459, 501, 771, 1503, 2313, 2839, 4369, 4509, 6939, 8517, 13107, 25551, 39321, 42919, 76653, 117963, 128757, 386271, 729623, 1158813, 2188869, 6566607, 19699821]

約数ペア:

[(1, 19699821), (3, 6566607), (9, 2188869), (17, 1158813), (27, 729623), (51, 386271), (153, 128757), (167, 117963), (257, 76653), (459, 42919), (501, 39321), (771, 25551), (1503, 13107), (2313, 8517), (2839, 6939), (4369, 4509)]